系统中使用无协议通讯解决交流电机的起制动和速度切换，实现数字化调速，简化控制系统。
Starting-braking and speed transformation of AD motor is solved by using non-agreement communication in the system, the numerical adjusting speed is realized, and the control system simplified.
同一个光纤环形激光器输出的由光纤光栅布喇格波长决定的两个不同波长的光脉冲可以每秒十万次的速度切换。
Output optical pulses from the laser can switch between two wavelengths determined by the Bragg wavelengths of two fiber gratings in the ring at the rate of 105 per second.
切换到一个CDN是一种相对比较简单的代码更改，将会大大改善您的网站上的速度。
Switching to a CDN is a relatively easy code change that will dramatically improve the speed of your web site.
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