Selecting Suncun coal mine as a research background has a double significance of mines and mine water cooling using.
选择孙村煤矿作为研究背景，具有矿井水利用和矿井降温的双重意义。
As a fundamental system to avoid moral danger by policy holder in insurance law, double insurance has importance significance for the realization of the function of insurance.
重复保险制度作为保险法律中一项防范投保人道德危险的基本制度，对保险功能的发挥具有重要意义。
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