这种结构的平衡箱和组装车间实施拉式系统所使用的一样，也是为了保持车间所使用的器具一致性。

This structure of the Leveling Box is the same with the one in Assembly Workshop, in order to keep standard in the plant.

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关于拉式系统模型的研究文献很多，但它们往往忽略生产过程零部件缺陷的存在或者直接假设缺陷水平为零。

There are lots of articles researching on pull system model, which often neglecting the defect of parts or assuming the defect level equals to zero directly in production process.

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便携式拉压试验系统能在试验台上满足各种非金属材料试件测试试验的要求。

This kind of test system can meet the requirement of nonmetal material test in the laboratory.

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