A new surface strengthening method, RE-Multi-Element diffusion, for HSS cutters by positive-negative pressure pulse process is investigated.
本文主要介绍采用正负压脉冲稀土多元共渗技术对高速钢刀具表面强化的一种新方法。
Objective To investigate the effect of limb's negative pressure on blood pressure, pulse and ECG of human being.
目的探讨肢体负压疗法对人体血压、脉搏及心电图的影响。
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