Radon measuring technology can be used as a supplementary method to study the ground subsidence in mining area with common survey.
通过分析得出测氡技术完全可作为一种辅助手段与常规测量一起进行地表沉陷的观测研究。
By analyzing the labor, material, machine and the price composition for steel plate pasting, the paper makes a study on how to calculate the cost of steel plate pasting with supplementary quota.
文章通过对粘贴钢板的工、料、机、价格构成分析，探讨如何编制补充定额计算粘贴钢板的造价。
This study can be a supplementary for official history.
这一研究可以起到补充正史的作用。
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