pivoting beam 中文意思是什麼
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Pivoting 90 degrees, raab pans westward across the sagebrush - stubbled desert until he spots an identical tube and another building, also four kilometers distant. “ when we talk about locking the laser beam ” that shines inside those tubes, raab says, “ we mean holding the light waves steady to better than the width of an atom ? over that distance
拉布說：當我們談到鎖住（管道內的）雷射光束時，意思其實是：在光束行經四公里的距離后，我們可以將其偏差控制在一個原子的寬度之內。
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