tube well

同根派生

Appropriate quantity of heat exchange of unit length tube well should be chose according to edaphic characteristics.
因此應根據土壤特性，選擇合適的單位長度管井換熱量。
This paper recommend a kind of simple manual die to bend the thin-wall rectangular cross section steel tube well in forming process.
介紹了一種簡單實用的手動彎曲模，可以較好地完成薄壁矩形截面鋼管的彎曲成形工藝。
Thispaper solves the problem using teclmique of big tube well, steel protecting canister, umbrella model breast wall and so on.
大孔經人工挖孔擴底灌注遇地下水施工難度大,本工程采用大管井降水,鋼護筒,傘模護壁等工藝和技術解決了這一難題。
The determination of diameter and length of tube well filter is always a problem not being completely solved for a long time in tube well engineering from theoretical and practical point of view.
長期以來,管井過濾器直徑和長度確定一直是管井工程未完全解決的理論和實踐課題,迄今,有關規(guī)定不同,存在學術見解分歧,也存在諸多值得討論的問題。
I am well aware that this is a tough job.
我深知這是一件棘手的工作。