The structure and working principle of switching ware are introduced, the application of switching ware in opening process and rejecting mechanism of injection mold are analyzed.
介绍了开闭器的结构及其工作原理，分析了开闭器在注射模开模过程和推出机构中的应用。
The using and choosing principle and basis of the colorimetric ware in the spectrophotometric methods are introduced as well as the correct using method and maintenance.
介绍分光光度法中比色皿的选择原则和依据，以及正确的使用和维护方法。
In this paper, briefly introduce the operation principle to control the vacuum stability with the computer on slice and the detail method of hard and soft ware.
本文简要地介绍了利用单片机实现真空度稳定控制的工作原理，阐述了软、硬件的具体实现方法。
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