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。
A new surface strengthening method, RE-Multi-Element diffusion, for HSS cutters by positive-negative pressure pulse process is investigated.
这使实现极低频的负磁导率以及通过磁场脉冲实现磁导率在正负之间快速跳变成为可能。
This makes achieving negative permeability under extremely low frequency as well as the permeability switching between positive and negative value rapidly through a magnetic field pulse into possible.
在自制的仪器上以脉冲激光溅射铁、钌、锇的三核羰基原子簇化合物，由原位质谱观察和分析溅射产生的正负离子。
Trinuclear carbonyl cluster compounds of Fe, Ru and Os were vaporized, ionized and dissociated by pulsed laser beam.
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