The original introduced some respects of the quality control in shaft pit shaft building.
本文介绍在立井井筒施工中质量控制方面的一些情况。
The main engineering geological which probably arise during the shaft building through the thick over soils are analyzed.
分析了巨野矿区立井穿过厚表土层将要遇到的主要工程地质问题。
His plans involve building an air shaft through the roof of the control center equipped with a solar powered fan to draw air deeper into the complex.
他计划在控制室的顶上装一套太阳能驱动的换气系统,将空气泵到设施的深处。
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