并根据实践经验介绍了抽取填埋气体的方法。
Extraction method of landfill gas was introduced based on practice experience.
根据实践经验，对普通材质的钢管可采用如下公式。
For ordinary steel tubes and, according to practical experience, the following formula can be used.
介绍一种记录系统信息表的设计方法，并根据实践经验提出优化措施。
This paper introduces a method of designing information table in recording system and gives an optimized method used in actual applications.
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