普通环规与卡规是为了检测大径。
通过实验，比较了紧密纺纱线与普通环锭纺纱线的性能。
The performances of compact spun yarn and ring spun yarn are compared through experiments.
普通环眼吊钩和美式环眼吊钩荷载相同时，其结构尺寸不同。
When common EYE HOOKS and American EYE HOOKS lift the same weight, the structure is different.
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