Double step drum is an integral drum with stepwise flanges and double step sections. It allows the multiple layer rope winding in non-operating portion of luffing mechanism to make drum shorter.
双阶梯卷筒是一种带有阶梯法兰盘和双阶梯截面的综合式卷筒，可在变幅机构的非工作区段使钢丝绳多层卷绕，以缩短卷筒长度；
They step and kick. They turn and spin. They step and kick again to the sounds of drum and horn.
他们踏眺踢腿，扭身旋转，顺着鼓和喇叭的乐声再次踏步踢腿。
Off to the drum sander for the next step: (the fadeout) You will want to really be careful on this step as it is a very important part of the bows strength and how the bow works.
到滚筒式砂光机为下一个步骤： （淡出）您将想要真正地小心在这步，因为它是弓力量的一个非常重要部分，并且怎么弓运作。
The complete vehicle test for a fuel-cell vehicle (FCV) is conducted on running drum tester, in which the working performance of radiator is studied under the step-constant speed condition.
在转鼓试验台架上进行燃料电池汽车的整车试验，利用阶梯等速法研究散热器的工作性能。
The complete vehicle test for a fuel-cell vehicle (FCV) is conducted on running drum tester, in which the working performance of radiator is studied under the step-constant speed condition.
在转鼓试验台架上进行燃料电池汽车的整车试验，利用阶梯等速法研究散热器的工作性能。
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