It can be used to provide blocking protection to a specific DC motor speed control system.
用此方法对一个直流电机数字控制调速系统进行堵转保护。
A good pair of UV-blocking running sunglasses give your face more protection and also help protect your eyes from the sun's damaging rays.
戴一副好的防紫外线跑步眼睛可以给你的面部更多的保护，还能在各种有害射线下保护你的双眼。
Plants on a planet with two sunlike stars could need protection against too much radiation—they might evolve their own UV-blocking sunscreens.
但是，如果有一颗类似地球的行星，同时被两个太阳照射，就像科幻小说里的那种场景，植物又会是什么样子呢？
应用推荐