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Replace piston rod and add flow passage on piston rod.
更换活塞杆，在活塞杆上增设流道。
youdao
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The analytical method is obtained by the local flow piston theory plus the strip theory.
该方法是根据当地流活塞理论和片条理论导得的。
youdao
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The analytical method is obtained by the local flow piston theory plus the strip theory.
该方法是根据当地流活塞理论和片条理论导得的。
youdao