“弯头”造句
精确地预计
弯头和管件的影响尚无方法可循.
No methods are available for the accurate prediction of the effect of bends and fittings.
我们常用
弯头(管、兰、通、小关)为一种管件.
We usually use elbow flangetee, reducer as a kind of pipe fitting.
在人井2中,将
弯头卸下,便于设备进入.
Debus turn head in the manhole 2 to have equipments smoothly entered.