The cage having simpler structure is selected and the principle testing for its dynamic balance is carried out to determine elementary method of cage dynamic balance.
作者选择结构较为简单的保持架，对其动平衡进行原理性试验，以确定保持架动平衡的基本方法。
With a simulation principle and simulation enlarged method, the paper scientifically selected the main structural parameters and dynamic parameters of the floatation machine.
运用相似原理，采用模拟放大方法，科学地确定了浮选机主要结构参数和动力学参数，研制成功了振荡分离高选择性浮选机。
The principle and method of the tracer screening for constructed wetland bed are introduced. NaCl is selected from four kinds of dye and NaCl. The input and detection method of NaCl are defined.
本文介绍了对适宜于人工湿地床的示踪剂筛选的原则和方法，从四种染料和食盐中，选定食盐作为人工湿地床的示踪剂，并介绍了食盐示踪剂的注入方法和检测系统。
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