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轨道运行的塔式起重机由于空间尺寸的限制,一般都采用多层缠绕的电缆卷筒如图1,此时,一层电缆绕入卷筒的长度为:
Due to space limitations, orbital tower cranes generally use multi-layer winding cable reels as shown in Figure 1. At this time, the length of one layer of cable wound into the reel is: