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1)  lower prop
下柱
2)  tripping operation petroleum string
起下管柱
3)  coal pillar under buildings
建下煤柱
1.
Extraction through tunnel,as a supplement of traditional mine coal with coal pillar under buildings,is a kind of special coal mine with narrow strip which is suitable in mine coal with shallow pillar under buildings and has been successfully utilized in practice.
作为传统建下煤柱开采方法的补充,适用于浅部建下压煤开采,已经成功地运用在实践中。
4)  tubular string
井下管柱
1.
To measure the loads on tubular strings during well testing to verify the accuracy of theoretical calculations,a special measurement meter is initiatively developed.
为了验证试油井下管柱力学理论分析的准确性,研制了井下管柱载荷测试器。
5)  lower pylon column
下塔柱
1.
The article introduces the overall idea,construction technology,construction difficulty and solving method to construct the lower pylon column for Haihe Bridge.
该文介绍了海河大桥下塔柱施工的总体思路、施工工艺、施工难点及解决办法。
6)  Sinking of rock pile
岩柱下沉
补充资料:壁处理开管柱
分子式:
CAS号:

性质:玻璃毛细管内壁表面光滑,表面能很高,许多固定液很难涂渍均匀。为了除去表面活性点,提高表面湿润性,增加表面积,涂渍前对柱内壁进行表面处理。表面处理的主要方法有表面粗糙化、表面去活和化学改性等。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条