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Knock plastics bulge into the wall with hammer.Don't let it outstand the wall. 用鐵錘小心將塑料脹塞打入墻面，不能突出墻面，可用小刀切除露墻外的部分。
Its range had the larger outstand to outboard working face under the condition of injecting grouts in separate layers. 離層帶注漿時的覆巖破壞形態(tài)和范圍向工作面外側突出較大。