The structure, property and working principle of nucleon turning tray steelyard were introduced, and its working feature as well as main factors of disturbing measuring accuracy were analyzed.
介绍了核子转盘秤的结构、性能及工作原理，分析了它的工作特征及干扰计量准确度的主要因素。
The technical property of HYS-1 sampler for undisturbed sand as well as its main structure, working principle and scope of use were presented.
主要叙述HYS—1型原状取砂器的技术性能、基本结构、工作原理及适用范围。
In this article are introduced the structure property and its adjustment of YJ20-142 cradle, the attentions in the cradle installation as well as the cradle working height adjustment.
介绍了YJ20 - 142型摇架的结构特点、安装注意事项和工作高度的调整过程。
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