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Terms for subject Electronics containing 专 用 自动交换机 | all forms
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专用自动扬声交换机private automatic loudspeaking exchange
专用自动用户电报交换机private automatic telex exchange
无线专用自动小型交换机wireless private automatic branch exchange
电子专用自动小型交换机electronic private automatic branch exchange
自动专用小型交换机automatic private branch exchange