he-Cd Lasers 氦镉雷射 ; 氦镉激光 ; 高速数字用户回路系统 ; 氦镉激光器
LICHTMAN: What do you mean, in the lasers in CD players?
李奇曼：你是什么意思，CD播放机里的激光？
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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