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初级产业
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primary industry
一级产业；初级产业
土木工程名词
primary industry
初级产业
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primary industry
初级产业；第一级产业
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time-delay constant
time-delay contactor relay
Time delay control
time delay de-energizing
time delay detection
time delay detector
time delay device
time delay device{=TD}
time delay difference
time delay differential
time delay distortion
time-delay distortion
time delayed mechanism
time delayed protection
time-delayed relay
time delayed switch{=TDS}
time delay energizing
time delay estimation
time delay leakage current operated protective device
time delay measurement
time delay neural network
time delay of transient recovery voltage
time delay of yield point
time delay opening relay
time delay operation
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