精冷是指男子因真阳不足而引起精气清冷，无生育能力者。
配合冷桑内室精洗剂与冷桑皮革精洗剂进行冷桑内室精洗项目。
In coordination with Cold Sauna Chamber Refinement shampoo and Cold Sauna Leather Refinement Lotion, it can do well in the washing project.
高频感应淬火不能达到硬化冷精锻直齿圆柱齿轮齿面的目的。
The high frequency induction hardening can't raise the surface microhardness of the cold precision forging spur gear.
研究了直齿圆柱齿轮的冷精锻过程，分析了分流孔形状、成形工艺等因素对齿轮成形的影响。
The cold precision forging of spur gears has been researched, and the effects of relief-hole shape and forging process on the spur gears forming has been analyzed.
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