卡具

wén zhāng jì suàn shè jì bìng jiào duì le qiǎ jù gè bù fen de yìng lì jūn dá dào le xū yòng fàn wéi

文章计算、设计并校对了卡具各部分的应力，均达到了需用范围。

The paper calculated, designed and checked the stress of each part of fixture, which has reached the scope of the needs.