swinging block linkage 摇块连杆组
swinging block quick return motion 摆杆急回运动
linkage swinging block 摇块连杆组
central swinging block linkage 中央摇块连杆组
The other end of the swinging block is connected with a swinging shaft.
它设置调节块、连杆和摇摆块。
Under arraying rope pillar function, two pieces of pulley block circles pillar to do left, right nimble swinging, which cause rope winds in regular arrangement.
绳索在排绳柱作用下，两个滑轮组绕柱子左、右灵活摆动，使绳索在卷绳轴形成有规则的排列。
When you are returning serve against a very fast server and you do not have time to hit a swinging return, just block the ball back almost like a volley.
当应对一个发球速度极快的对手时，你不需要一个完整的引拍接发，只需要把球挡击回去，这有点截击的感觉。
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