1·It might be necessary to convert the whole country back to coal gas.
可能有必要使全国都重新改为使用煤气。
2·You may entrust us as an agent to pay the charges of your water, power, coal gas, telephone, etc. Then you will have nothing to worry about.
您可以委托我行为您代交水、电、煤气、电话等费用，您就不用为此烦恼了。
3·Coal gas reservoir has different physical properties from sand and shale stone formation, it is difficult for conventional test to get formation parameters.
煤气储层具有与砂泥岩地层不同的储层物性，常规测试很难获取地层参数。
4·On the basis of theory discussion, USES package development and API function development approach, combines coal gas pipe network administrative system make network analysis realize VB procedure.
在理论探讨的基础上，运用组件开发和API函数开发方法，结合煤气管网管理系统作了系统分析和VB程序实现。
5·By taking the method of membership function in fuzzy set theory, the volume of coal gas was calculated by fuzzy matrix.
采用了模糊集合理论的隶属函数方法，利用模糊矩阵运算进行推定所需煤气量。