As often before, birds are acting like the canaries in a mine shaft and giving us early warning of dangerous change.
和以往一样，鸟类的反应正如‘煤矿里的金丝雀’，提前给我们鸣响警钟。
It also deals with the measuring method, measuring system and devices used in connection with horizontal loads acting on the shaft equipment.
介绍了井筒装备上水平荷载的量测方法、量测系统及其装置。
On the basis of the analysis of shaft lining stress state and displacement state, proposed the back analytical method for determination of the elliptic load acting on shaft lining.
在分析受不均匀荷载作用的立井井壁应力和位移的基础上，提出了确定立井井壁椭圆荷载的反分析方法。
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