It offers a set of systematic new methods for researching and measuring the recent tectonic stress field in the area of tunnel through mountain in the future.
为未来越岭隧道地区现代构造应力场的研究和测量提供了一套较为系统的新方法。
In this paper, the significance and area of low voltage grounding protection are described and some methods for measuring grounding resistance are introduced.
简述了低压用电设备保护接地的意义，保护接地范围，以及测量接地电阻的方法。
The paper also compares general methods of measuring area in accuracy and efficiency and enumerates their advantages, shortages and suitable ranges.
其次对目前量测面积的各种方法从精度及效率上进行分析比较，指出各种方法的优缺点和适用范周。
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