hydro-static leveling
液体静力水准测量 hydro-static leveling 水平位移测量 horizontal displacement measurement ..
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本文叙述了液体静力水准测量的各种观测方法，以及通过对不同液体静力水准仪的分析对比，介绍了液体静力水准系统。
This paper described all kinds of observation methods of hydrostatic level and introduced the system by means of analysis and comparison between the hydrostatic level of different liquids.
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