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hollow-cathode He-Cd laser 空心阴极氦镉激光器
He-Cd laser 氦镉雷射
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With these equations we have designed for helium-cadmium lasers a new type of helium replenisher, which has lengthened the life time of a He-Cd laser to over 1000 hours so far.
按此方程所设计的用于长寿命氦—镉激光器的新型氦补充器，使氦—镉激光器寿命已超过一千小时。
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