
顏色(se)與質材(cai)相得益彰,設計(ji)(ji)的(de)空間會因(yin)(yin)此更加廣闊,人(ren)(ren)(ren)(ren)(ren)的(de)激(ji)情也會因(yin)(yin)此而(er)常(chang)有(you)常(chang)新(xin)!人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)石(shi)(shi)材(cai)種類(lei)與特點及其石(shi)(shi)材(cai)用途一、人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)石(shi)(shi)材(cai)的(de)種類(lei)(1)按出產所用的(de)材(cai)料人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi)重要分(fen)為(wei):水泥(ni)型(xing)(xing)人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi)、樹脂型(xing)(xing)人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi)、復合(he)(he)型(xing)(xing)人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi)、燒(shao)結型(xing)(xing)人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi)。這四種制作(zuo)人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi)的(de)方法中,常(chang)用的(de)是聚(ju)酯(zhi)型(xing)(xing)人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi),其物理(li)(li)(li)和化(hua)(hua)學機能(neng)(neng)好,花紋輕易(yi)設計(ji)(ji),有(you)重現性(xing),適于(yu)(yu)多種用處,但價格絕對較高(gao)(gao);水泥(ni)型(xing)(xing)人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi)價錢低(di)廉,但耐(nai)腐化(hua)(hua)性(xing)能(neng)(neng)較差,容易(yi)呈現微龜裂,適于(yu)(yu)作(zuo)板(ban)材(cai)而(er)不適于(yu)(yu)作(zuo)衛生(sheng)潔具;復合(he)(he)型(xing)(xing)則綜合(he)(he)了前兩者的(de)長處,既有(you)良好的(de)物化(hua)(hua)性(xing)能(neng)(neng),本(ben)錢也較低(di);燒(shao)結型(xing)(xing)人(ren)(ren)(ren)(ren)(ren)造(zao)(zao)(zao)大(da)(da)理(li)(li)(li)石(shi)(shi)固然只用粘土作(zuo)膠粘劑(ji),但需經高(gao)(gao)溫焙燒(shao),因(yin)(yin)此能(neng)(neng)耗大(da)(da),造(zao)(zao)(zao)價高(gao)(gao),而(er)且產品破損率高(gao)(gao)。(2)按使用品名分(fen)類(lei)為(wei):1、亞(ya)克力(li)石(shi)(shi):一種化(hua)(hua)學樹脂合(he)(he)成(cheng)材(cai)料,清潔,多用于(yu)(yu)廚房(fang)臺(tai)面,易(yi)成(cheng)型(xing)(xing),防水性(xing)好,無色(se)差,但易(yi)劃傷。

天然(ran)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)硬度(du)大(da),脆性(xing)大(da),不耐撞擊,易(yi)破(po)碎,耐沖擊性(xing)比(bi)天然(ran)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)好(hao)。(4)加工制作(zuo)方便。人(ren)造(zao)石(shi)(shi)(shi)(shi)的(de)(de)(de)(de)硬度(du)和(he)(he)韌性(xing)已(yi)調整到一(yi)定范圍(wei)。可(ke)以(yi)(yi)像做硬木一(yi)樣加工,凡是(shi)木工用(yong)(yong)(yong)的(de)(de)(de)(de)工具(ju)和(he)(he)機(ji)械(xie)設備都可(ke)以(yi)(yi)用(yong)(yong)(yong)于(yu)人(ren)造(zao)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)的(de)(de)(de)(de)制作(zuo)加工,可(ke)粘接(jie)(利(li)用(yong)(yong)(yong)專(zhuan)用(yong)(yong)(yong)膠(jiao)水(shui),各種(zhong)臺(tai)面均可(ke)接(jie)得(de)“天衣無(wu)縫(feng)”),可(ke)彎曲(qu),可(ke)加工成各種(zhong)形(xing)狀(zhuang),這是(shi)天然(ran)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)無(wu)法(fa)比(bi)擬的(de)(de)(de)(de)。(5)結(jie)構(gou)致密(mi),清潔衛生(sheng)(sheng),天然(ran)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)存(cun)在(zai)著(zhu)天然(ran)微孔(kong),在(zai)做櫥柜(ju)的(de)(de)(de)(de)臺(tai)面時,菜(cai)湯(tang)等營養(yang)物(wu)質易(yi)滲入(ru)其(qi)(qi)內,滋(zi)生(sheng)(sheng)細菌(jun)(jun);而人(ren)造(zao)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)結(jie)構(gou)致密(mi),無(wu)微孔(kong),液體物(wu)質不能滲入(ru),細菌(jun)(jun)不能在(zai)其(qi)(qi)中(zhong)生(sheng)(sheng)長,故有些商家(jia)把人(ren)造(zao)石(shi)(shi)(shi)(shi)炒作(zuo)為“抗菌(jun)(jun)石(shi)(shi)(shi)(shi)”也有其(qi)(qi)道理。人(ren)造(zao)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)從誕生(sheng)(sheng)至(zhi)今經歷幾(ji)十年的(de)(de)(de)(de)研(yan)究、開發和(he)(he)創(chuang)新(xin),使(shi)人(ren)造(zao)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)能開發多種(zhong)材(cai)(cai)(cai)料(liao)廣泛應(ying)用(yong)(yong)(yong)與商業(ye)、住宅(zhai)、甚至(zhi)軍(jun)事領域等。在(zai)商業(ye)用(yong)(yong)(yong)途上,人(ren)造(zao)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)的(de)(de)(de)(de)使(shi)用(yong)(yong)(yong)幾(ji)乎不受限制。根據產(chan)品的(de)(de)(de)(de)適應(ying)性(xing),它(ta)可(ke)用(yong)(yong)(yong)于(yu)健(jian)康(kang)中(zhong)心(xin)、醫療機(ji)構(gou)、公共寫字樓、廠(chang)礦公司(si)、購物(wu)中(zhong)心(xin)等空間(jian)里(li)的(de)(de)(de)(de)設備設施。當它(ta)作(zuo)用(yong)(yong)(yong)于(yu)柜(ju)臺(tai)、墻體、水(shui)槽、展示架、家(jia)具(ju)、電梯(ti)等器物(wu)時,色彩(cai)紋理設計獨特(te)的(de)(de)(de)(de)人(ren)造(zao)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)無(wu)不顯示其(qi)(qi)體貼、溫(wen)暖、可(ke)塑性(xing)強、可(ke)自(zi)由(you)切(qie)裁、彎曲(qu)、研(yan)磨、接(jie)合(he)耐久等卓越性(xing)能,產(chan)品的(de)(de)(de)(de)這些特(te)點,是(shi)消費(fei)者在(zai)使(shi)用(yong)(yong)(yong)時可(ke)以(yi)(yi)大(da)膽創(chuang)作(zuo),保持美感。人(ren)造(zao)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)可(ke)以(yi)(yi)根據使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)需(xu)要做成各種(zhong)應(ying)用(yong)(yong)(yong)等級(ji)的(de)(de)(de)(de)材(cai)(cai)(cai)料(liao),是(shi)衛生(sheng)(sheng)環保材(cai)(cai)(cai)料(liao),實心(xin)無(wu)孔(kong),毫無(wu)隱污納垢(gou)的(de)(de)(de)(de)空洞(dong)或縫(feng)隙。其(qi)(qi)表(biao)面接(jie)縫(feng)非常緊密(mi),不會(hui)被水(shui)滲透。

才能真正達到完美的(de)(de)效(xiao)果(guo)。光(guang)線要(yao)(yao)充足調(diao)(diao)膠(jiao)(jiao)(jiao)(jiao)時(shi)(shi)(shi),盡(jin)量(liang)在(zai)白(bai)天,光(guang)照充足的(de)(de)條件下進行,以利于(yu)(yu)分(fen)辨(bian)色澤。要(yao)(yao)充分(fen)對比調(diao)(diao)膠(jiao)(jiao)(jiao)(jiao)時(shi)(shi)(shi),要(yao)(yao)不(bu)斷與石材進行對比調(diao)(diao)整,直至滿意的(de)(de)效(xiao)果(guo)為止。調(diao)(diao)膠(jiao)(jiao)(jiao)(jiao)分(fen)批(pi)次同一個(ge)區域(yu)需要(yao)(yao)的(de)(de)膠(jiao)(jiao)(jiao)(jiao),應(ying)一次調(diao)(diao)制完成,不(bu)要(yao)(yao)多次調(diao)(diao)膠(jiao)(jiao)(jiao)(jiao),導致顏(yan)色不(bu)一。批(pi)刀(dao)的(de)(de)選擇調(diao)(diao)膠(jiao)(jiao)(jiao)(jiao)時(shi)(shi)(shi),一般(ban)用(yong)的(de)(de)工(gong)(gong)(gong)具是批(pi)刀(dao)。批(pi)刀(dao)要(yao)(yao)求寬度(du)不(bu)超(chao)過(guo)3寸,越寬,力量(liang)越分(fen)散,膠(jiao)(jiao)(jiao)(jiao)的(de)(de)均勻度(du)就不(bu)夠。工(gong)(gong)(gong)具選擇批(pi)刀(dao)補(bu)(bu)(bu)膠(jiao)(jiao)(jiao)(jiao)要(yao)(yao)用(yong)到批(pi)刀(dao),寬度(du)不(bu)應(ying)超(chao)過(guo)2寸。原因在(zai)于(yu)(yu)防止力量(liang)的(de)(de)過(guo)多分(fen)散,不(bu)利于(yu)(yu)膠(jiao)(jiao)(jiao)(jiao)的(de)(de)滲入。刀(dao)片補(bu)(bu)(bu)膠(jiao)(jiao)(jiao)(jiao)過(guo)程(cheng)中(zhong),工(gong)(gong)(gong)人另(ling)一個(ge)必備的(de)(de)工(gong)(gong)(gong)具是刀(dao)片。目的(de)(de)在(zai)于(yu)(yu)發現污(wu)染(ran),及時(shi)(shi)(shi)清(qing)除(chu)。否則(ze),留在(zai)縫(feng)隙(xi)(xi)中(zhong)的(de)(de)污(wu)染(ran),會造成發黑、脫膠(jiao)(jiao)(jiao)(jiao)等問(wen)題(ti)。鞋套為防止灰(hui)塵的(de)(de)污(wu)染(ran),施工(gong)(gong)(gong)人員應(ying)穿(chuan)戴鞋套入內施工(gong)(gong)(gong)。補(bu)(bu)(bu)膠(jiao)(jiao)(jiao)(jiao)操作補(bu)(bu)(bu)膠(jiao)(jiao)(jiao)(jiao)時(shi)(shi)(shi),用(yong)批(pi)刀(dao)將調(diao)(diao)好的(de)(de)膠(jiao)(jiao)(jiao)(jiao)橫著刮到縫(feng)隙(xi)(xi)處(chu),用(yong)力擠壓。再沿縫(feng)隙(xi)(xi)處(chu)豎著刮去多余的(de)(de)膠(jiao)(jiao)(jiao)(jiao),合理狀態(tai)下,補(bu)(bu)(bu)膠(jiao)(jiao)(jiao)(jiao)應(ying)在(zai)縫(feng)隙(xi)(xi)處(chu)留下0.2~0.3mm的(de)(de)凸起。一方(fang)面為膠(jiao)(jiao)(jiao)(jiao)在(zai)干固(gu)過(guo)程(cheng)中(zhong)留下余量(liang),防止沉(chen)降出凹槽。

不只可(ke)(ke)以(yi)降低(di)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)裝(zhuang)修本錢,重慶石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工廠而(er)且(qie)可(ke)(ke)以(yi)節約和有用(yong)運用(yong)有限(xian)的(de)(de)(de)(de)(de)(de)(de)貴重石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)本錢。除可(ke)(ke)直接粘貼外,還可(ke)(ke)以(yi)制成蜂窩板(ban)(ban)(ban)、復合板(ban)(ban)(ban)等(deng);而(er)且(qie)經國(guo)外建筑物運用(yong)超(chao)(chao)薄(bo)板(ban)(ban)(ban)證明,超(chao)(chao)薄(bo)型天(tian)然(ran)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)能(neng)較(jiao)好的(de)(de)(de)(de)(de)(de)(de)飽(bao)嘗地(di)震、熱脹冷縮等(deng)各類惡(e)劣(lie)環境的(de)(de)(de)(de)(de)(de)(de)檢(jian)查(cha)(cha)。啥樣的(de)(de)(de)(de)(de)(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)板(ban)(ban)(ban)瓦(wa)才是(shi)好的(de)(de)(de)(de)(de)(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)板(ban)(ban)(ban)瓦(wa)重慶石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工廠告訴你啥樣的(de)(de)(de)(de)(de)(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)板(ban)(ban)(ban)瓦(wa)才是(shi)好的(de)(de)(de)(de)(de)(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)板(ban)(ban)(ban)瓦(wa)高(gao)(gao)硅,低(di)鈣、鐵(tie)、鎂、鋁(lv)、黑(hei)度(du)(du)深、色差小、可(ke)(ke)劈分性高(gao)(gao)、表面(mian)平(ping)整度(du)(du)好,二氧化(hua)(hua)硅的(de)(de)(de)(de)(de)(de)(de)凹凸(tu)會(hui)觸及板(ban)(ban)(ban)質的(de)(de)(de)(de)(de)(de)(de)硬度(du)(du)和吸(xi)水(shui)率,我國(guo)(R1)、德國(guo)、美國(guo)(S1)的(de)(de)(de)(de)(de)(de)(de)板(ban)(ban)(ban)石(shi)(shi)(shi)(shi)(shi)(shi)規范(fan)來說(shuo),低(di)硅的(de)(de)(de)(de)(de)(de)(de)板(ban)(ban)(ban)材(cai)(cai)(cai)(cai)因其(qi)抗壓(ya)強(qiang)度(du)(du)和吸(xi)水(shui)率的(de)(de)(de)(de)(de)(de)(de)缺少不能(neng)用(yong)來做屋面(mian)瓦(wa)板(ban)(ban)(ban),高(gao)(gao)鈣的(de)(de)(de)(de)(de)(de)(de)板(ban)(ban)(ban)材(cai)(cai)(cai)(cai)易褪色、風化(hua)(hua),高(gao)(gao)金屬元(yuan)素的(de)(de)(de)(de)(de)(de)(de)易于空氣中的(de)(de)(de)(de)(de)(de)(de)硫元(yuan)素反應致使老化(hua)(hua)開裂,具體請參(can)看國(guo)度(du)(du)板(ban)(ban)(ban)石(shi)(shi)(shi)(shi)(shi)(shi)查(cha)(cha)驗(yan)規范(fan)GB 18600,我國(guo)國(guo)度(du)(du)天(tian)然(ran)板(ban)(ban)(ban)石(shi)(shi)(shi)(shi)(shi)(shi)僅(jin)有的(de)(de)(de)(de)(de)(de)(de)查(cha)(cha)驗(yan)規范(fan)。

通常情(qing)況(kuang)下圓(yuan)形的(de)刀(dao)具(ju)因(yin)為切開半徑(jing)比(bi)照(zhao)小,所(suo)以重慶石(shi)(shi)材(cai)(cai)加工(gong)廠的(de)石(shi)(shi)材(cai)(cai)在受力的(de)進(jin)程(cheng)中比(bi)照(zhao)安穩,一同(tong)切開進(jin)程(cheng)的(de)好(hao)壞(huai)直接決議著石(shi)(shi)材(cai)(cai)的(de)運用壽數。因(yin)此加工(gong)東西的(de)翻(fan)開將會不(bu)斷跋涉。同(tong)樣是修建板石(shi)(shi)類,瓦(wa)(wa)板巖能夠做(zuo)飾面板巖,而飾面板巖不(bu)能做(zuo)瓦(wa)(wa)板巖,這是啥理(li)由呢?首(shou)要(yao)(yao)要(yao)(yao)知(zhi)道(dao)優質的(de)板石(shi)(shi)有(you)(you)必(bi)要(yao)(yao)具(ju)有(you)(you)的(de)特(te)(te)征:劈分功用好(hao)、平整度(du)好(hao)、色(se)差(cha)小、黑度(du)高(gao)(其他(ta)色(se)彩同(tong)理(li))、曲(qu)折強度(du)高(gao)、含鈣鐵(tie)硫量低,燒失量低,耐酸(suan)堿(jian)功用好(hao),吸(xi)水率(lv)低,耐候(hou)性(xing)好(hao)。重慶石(shi)(shi)材(cai)(cai)加工(gong)廠的(de)青石(shi)(shi)板材(cai)(cai)不(bu)具(ju)有(you)(you)超卓的(de)劈分功用,根柢沒有(you)(you)方法把石(shi)(shi)板瓦(wa)(wa)劈分到(dao)5~7mm的(de)規范厚度(du);沒有(you)(you)超卓的(de)曲(qu)折強度(du),在這一厚度(du)下就無法抵達蓋瓦(wa)(wa)的(de)運用需要(yao)(yao);平整度(du)差(cha),根柢不(bu)能滿(man)意規整穩妥的(de)掛(gua)瓦(wa)(wa)施工(gong)需要(yao)(yao);沒有(you)(you)超卓的(de)材(cai)(cai)料特(te)(te)征,就不(bu)能夠經久不(bu)褪色(se)、不(bu)風化、不(bu)生銹而堅持100年以上的(de)運用壽數。

鄂州偉奇星空灰大理石公司一觀(guan):肉眼觀(guan)察(cha)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)的(de)(de)表(biao)面(mian)結構(gou)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)的(de)(de)好(hao)(hao)壞肉眼即(ji)能(neng)分辨,好(hao)(hao)的(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)表(biao)面(mian)細致光滑(hua),質(zhi)量(liang)(liang)差(cha)的(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)表(biao)面(mian)粗糙不(bu)(bu)平,表(biao)面(mian)呈顆粒狀組合。此外(wai),石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)邊緣也要(yao)(yao)仔細觀(guan)察(cha),是(shi)否(fou)有缺口(kou),細微的(de)(de)裂(lie)痕等,對(dui)日后使用(yong)有著不(bu)(bu)小(xiao)的(de)(de)影(ying)響。二量(liang)(liang):量(liang)(liang)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)的(de)(de)尺(chi)寸規格在(zai)買石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)之前,一定(ding)要(yao)(yao)先量(liang)(liang)好(hao)(hao)裝修(xiu)尺(chi)寸,然后購買石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)時也要(yao)(yao)對(dui)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)進行測量(liang)(liang),一定(ding)要(yao)(yao)買合適尺(chi)寸的(de)(de),以免后續石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)不(bu)(bu)夠(gou)需要(yao)(yao)拼接(jie),這樣極其影(ying)響美觀(guan)度。三(san)聽:聽石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)的(de)(de)敲擊聲(sheng)音一般好(hao)(hao)的(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)敲擊起來聲(sheng)音十(shi)分清脆(cui),原因(yin)是(shi)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)內部質(zhi)地均勻無裂(lie)隙;相反,質(zhi)量(liang)(liang)不(bu)(bu)好(hao)(hao)的(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)敲擊聲(sheng)音相當粗啞,因(yin)其質(zhi)地不(bu)(bu)勻且里面(mian)很可(ke)能(neng)存在(zai)裂(lie)隙。四試:用(yong)簡單(dan)的(de)(de)試驗方法(fa)(fa)來檢驗石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)質(zhi)量(liang)(liang)好(hao)(hao)壞墨水(shui)(shui)滴(di)滲(shen)法(fa)(fa)是(shi)很常用(yong)的(de)(de)檢驗石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)質(zhi)量(liang)(liang)的(de)(de)方法(fa)(fa),將(jiang)一小(xiao)滴(di)墨水(shui)(shui)滴(di)在(zai)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)背面(mian),若深入(ru)(ru)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)內部則說明石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)質(zhi)地不(bu)(bu)細致,是(shi)質(zhi)量(liang)(liang)差(cha)的(de)(de)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai),反之,若不(bu)(bu)能(neng)滲(shen)入(ru)(ru)則說面(mian)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)質(zhi)量(liang)(liang)較好(hao)(hao)。