It's a bit like if you're pushing a boat through a river and measuring something about the surface - you don't want to measure the ripples from the boat.
这就有点儿像你将一艘船从河的这边推到另一边，并测量河面上的某些东西，但你不希望连同船儿泛起的涟漪也一并测量出来。
It has been successfully used in measuring angular displacement within paddle of racing boat.
将其用于赛艇角位移测量，收到较好的效果。
It has been successfully used in measuring angular displacement within paddle of racing boat.
将其用于赛艇角位移测量，收到较好的效果。
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