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| electron-beam surface hardening (【技】电子束热处理工艺的一种。用高能量密度的电子束直接照射到工件上，在极短的时间内使工件表面加热到淬火温度，然后移开电子束热源，依靠工件的自激冷造成表面硬化。) | |||
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