网球中的急停启动要求鞋提供足够的缓冲，额外的支撑，更结实的鞋底，所有这些都要增加份量。
The stop-and-start demands of tennis require that shoes have ample cushioning, extra support, and more durable outsoles, all of which add weight.
缓冲罐中的液位由液位控制器控制，使补液泵及时启动、停泵，使罐内保持一定的安全液位；
The liquid level in the buffer tank is controlled by the liquid level controller, making the fluid infusion pump started and stopped timely, and a certain liquid level can be kept in the buffer tank.
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