介绍了国内外水-乙二醇难燃液压液的标准情况，包括其主要使用性能和试验方法。
The domestic and foreign standards of water-glycol fire resistant hydraulic fluid are described, including the main working performances and test methods.
塑料管道系统。热塑塑料压力管道用的弹性密封环型接头和机械接头。外部液压条件下防漏密封试验方法。
Plastics piping systems. elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping. test method for leaktightness under external hydrostatic pressure.
对在实验室条件下进行水平加载检验时，液压支架受力情况进行了分析，提出了水平加载的试验方法。
The force resistance of powered support when horizontal loading was added under the condition of laboratory was analyzed and a horizontal loading experiment method was put forward.
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