The two simple methods can be employed to check the performance of depurant uesed in the analysis of residual pesticide.
这两种方法可以方便地检查出农药残留分析中净化剂的性能。
The two simple methods can be employed to check the performance of depurant uesed in the analysis of residual pesticide.
这两种方法可以方便地检查出农药残留分析中净化剂的性能。
JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.
用492Q
机的JCQ净化消声器采用稀
小球为催化剂,用正交频
权优化法优选消声器结构参数,取得良好的消声、净化性能。
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