... 岩芯钻 取芯钻 空心钻 coredrill 空心杆冲钻 rod churn drill 空心钻杆螺旋钻 stemmed auger ...
基于8个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
螺旋钻头底部阀门防止钻进过程中钻屑进入到空心的混凝土管中，当钻杆提出同时混凝土浆注入时，钻杆底部的阀门将被打开。
The valve at the bottom of auger can prevent drilling bits entering hollow pipe during operation. When drilling pipe is taken out and concrete grout is injected, the valve will be opened.
youdao
应用推荐
模块上移
模块下移
不移动