The streamlined diameter-adjustable mandrel has been designed by analysis its structure and calculation, which supply a way for opening the similar produce.
设计了一种新型的可调直径卷筒，对卷筒的总体结构进行了分析和设计、计算，为开发同类产品提供了设计依据。
The size of the slit (16) is adjustable to meet the requirements of drawing the mandrel bars with different specifications.
开缝（16）的大小可调以适于拔不同规格芯棒的需要。
The size of the slit (16) is adjustable to meet the requirements of drawing the mandrel bars with different specifications.
开缝（16）的大小可调以适于拔不同规格芯棒的需要。
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