| 单词 | return loss | 
| 释义 | return loss [ri`tǝrn ´lȯs]  COMMUNICATIONS 1. The difference between the power incident upon a discontinuity in a transmission system and the power reflected from the discontinuity.  2. The ratio in decibels of the power incident upon a discontinuity to the power reflected from the discontinuity.  | 
	
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