On the basis of illustrating the meaning of optimizing mining design, the main technical contents and practicable conditions of the optimization adopted by mines are given.
在阐述矿山开采优化设计命题内涵的基础上，指出了矿山开采优化设计的主要技术内容及其实施的条件。
The main difference from technical contents between two versions of standard was analyzed.
着重分析了两个版本标准在技术内容上的主要差异。
The main forms of green barriers can be concluded as follows: relatively high inquirements on harmful contents in goods, green technical standards, green environment label, green packing and so on.
绿色壁垒的主要形式包括：对商品中的有害物质含量制定较高的指标、绿色技术标准、绿色环境标志和绿色包装等。
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