The cycle frequency of jet fluid swing is half of that of tangential circle rotation.
相应切圆呈周期性旋转，射流摆动也具有周期性，该周期是切圆旋转周期的一半。
The back had a gravel driveway with a four-car garage, a nice lawn with a swing set, and, on both sides of the driveway, sloping lawns that went down to the street, Circle drive.
房子后面有一条碎石铺成的车道，一个可停放四辆车的车库，一块漂亮的草坪，草坪上立着秋千架，车道两边则是草坪坡地，一直延伸到环路街上。
Looking at explicit Mei six eye pupil sons entire gaze slip away a circle, raise the wood stake namely the finger wears blank land navel son, I shake to swing of waded to pass by.
看着明寐六只眼珠子都瞪得溜圆，翘手指着空地中间的木头桩子，我摇摇晃晃的走了过去。
She had been with her husband on his swing around the circle.
她曾随同她丈夫作竞选旅行。
She had been with her husband on his swing around the circle.
她曾随同她丈夫作竞选旅行。
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