①金jin剛gang砂sha耐nai磨mo地di麵mian施shi工gong的de平ping整zheng度du主zhu要yao由you水shui泥ni混hun凝ning土tu基ji層ceng的de平ping整zheng度du控kong製zhi,耐nai磨mo材cai料liao的de鋪pu撒sa隻zhi是shi表biao麵mian的de一yi薄bo層ceng,所suo以yi初chu凝ning前qian控kong製zhi混hun凝ning土tu外wai觀guan的de平ping整zheng度du是shi非fei常chang重zhong要yao的de。為wei了le控kong製zhi混hun凝ning土tu基ji層ceng的de平ping整zheng度du,在zai澆jiao築zhu混hun凝ning土tu時shi,可ke用yong兩liang把ba刮gua杠gang刮gua平ping,大da麵mian積ji澆jiao築zhu混hun凝ning土tu可ke使shi用yong大da型xing激ji光guang找zhao平ping
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