请将您的遮光罩和光照对水族馆，然后检查您的电源线，以确保他们都是免费的水。
Place your hood and light on the aquarium and then check your power cords to be sure that they are free of water.
在屏幕钉在树上，他的后院，他确定了1928年柯达投影机的遮光罩自己的汽车，并把后面的屏幕广播，测试不同的声音与他的水平下降和车窗了。
Afternailing a screen to trees in his backyard, he set a 1928 Kodakprojector on the hood of his car and put a radio behind the screen, testing different sound levels with his car Windows down and up.
遮光罩和挡光环程序化设计的原理及实现。
Principle and realization of baffle and vane's programmable design.
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