It must have room for 4 paper widths between which the machine can alternate automatically, depending on the size of the mattresses to be packed.
一定要有足够的4卷纸的空间以便设备能够自动交替转换，由需要要包装的床垫的尺寸而定。
The paper presents the connecting between the machine room and the rear-beam in detail for the ZPMC main product-quayside container crane, and points out the advantages and shortcomings.
针对ZPMC的主产品岸边集装箱起重机，对其机器房与后大梁连接方法进行了详细介绍，指出了其优缺点。
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