main switchboard是什么意思

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用法例句

In this paper, total glycosides in the soyasaponins from soybean leaves were further separated and then purified on the basis of their extract process.

在大豆叶子中大豆皂甙总配糖体提取工艺的基础上,进一步对总配糖体进行了分离纯化研究,主要研究了大豆皂甙总配糖体的脱色澄清、萃取以及萃取后得到大豆皂甙总配糖体的柱分离精制,从而得到了大豆皂甙分离纯化最佳的工艺条件。

These structural rules are concentratedly expressed by the total coordination numbers and the periodic table of isoelectronic molecules.

这些结构规则以总配位数式和等电子分子周期表为其集中的体现形式。

Further analysis have been done (about) general combining ability ,special combining ability ,total combining ability on the basis of above.

在此基础上进行了一般配合力、特殊配合力、总配合力的分析。

A Centralized Remote Monitoring System for the Main Distribution Frame Based on ARM Micro-processor;

基于ARM的总配线架远程集中监控系统

It implements the remote FDD on MDF systems with less care but full detect.

给出了一种利用公用电话网 (PSTN)的远程分布式总配线架 (MDF)集中监控系统的设计与实现方案 ,介绍了系统的结构原理、内部数据通信约定和监控仪的设计实现。