“扩孔”的拼音

添加适量的扩孔剂也能一定程度地提高孔容.Addition of appropriate amount of pore - expanding agents could increase the pore volume.管道的选择, 测量, 切割, 扩孔和刻螺纹; 安装喷嘴以支撑管道系统.Select, measure, cut, ream and thread pipe, install sprinkler heads and moun...

“扩孔”的英语可以翻译为：eaming，[土] under-reaming，bearizing，ring rolling ...