Excessive high or low of shot speed will decrease the property of die castings.
压铸速度过小或过大会降低压铸件的性能。
Escape velocity is simply the speed of an object that's shot out of a cannon the minimum initial speed so that the object could later escape Earth's gravity on its own.
逃逸速度就是一个物体的速度,比如说,从加农炮中射出的最小初始速度,这样这个物体以后就可以自己脱离地球的引力。
With the camera in manual mode, however, you control the shutter speed to get the shot you really want.
而当相机处于手动模式的时候,由你来控制快门速度从而得到你想要的照片。
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