Energy conversion efficiency testing conducted according to European Standard en 50530 yielded a very high efficiency grade of 98.7%.
根据欧洲标准EN50530能源转换效率测试显示，该逆变器的转换效率高达98.7%。
At present, the main method of testing air filters is fraction efficiency testing method with particle counter.
以粒子计数器为测试手段的粒径效率测试法是目前过滤器测试的主要方法。
On the basis of analyzing the principle of shale membrane efficiency testing, formulae are derived for calculating the membrane efficiency by using pressure transmission technique.
在对泥页岩膜效率测试原理分析的基础上，推导了通过压力传递技术测定泥页岩膜效率的计算公式，并研制了泥页岩膜效率测试装置。
On the basis of analyzing the principle of shale membrane efficiency testing, formulae are derived for calculating the membrane efficiency by using pressure transmission technique.
在对泥页岩膜效率测试原理分析的基础上，推导了通过压力传递技术测定泥页岩膜效率的计算公式，并研制了泥页岩膜效率测试装置。
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