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信号调制 | |
tech. | signal modulation |
成分 | |
hydroel.st. | element |
interntl.trade. | ingredients |
manag. | component parts; sector |
met. | constitution; formulation |
sport. med. | ingredient; constituent |
tech. | composition |
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signal modulation |
信号调制 : 51 phrases in 14 subjects |