placing concrete是什么意思 placing concrete怎么读
placing concrete的相关资料
PLAabbr.中国人民解放军(=People's Liberation Army)
Plavec普拉韦茨
placing concrete的用法和样例
- The steamroller levelled off the gravel roadbed and then the concrete was poured.
蒸汽压路机压平碎石路基,然后浇注混凝土。
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