rock and roll is dead » 摇滚是死 Improved surface quality » 改善的表面质量 Directions: Write an essay of about 150 words on Choosing an Occupation.
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本机组采用光整机的主要用途是改善镀层表面质量和机械性能。
Skin pass mill is used to improve surface quality and mechanical properties of the coating.
为了改善电火花强化层的表面质量，研制了JD Q - 1型脉冲电火花强化机。
In order to improve surface quality of the electrospark hardening layer, JDQ 1 type equipment of pulse electrospark hardening was devised.
介绍了电火花加工中常见的加工精度和表面质量问题以及产生的原因及相应的改善措施。
The machining precision and surface quality are introduced in electrical discharge machining and their causes as well as improved measures are put forward.
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