background extinction

常见例句

The results also show that the performance of this communication system can be affected by background optical, APD gain and modulation extinction ratio.
該通信系統還受背景光、雪崩光電二極琯（APD）增益和調制消光比等因素的影響。
Against the background of "Saving the Nation from Extinction", a thinking trend of advocating chivalry was raised by literary elites at the end of Qing Dynasty.
在近代“救亡”的背景下，清末知識精英掀起一股尚俠思潮。
Under the background of saving the nation from extinction, any system transplanting must be attached a label as national interest and civil welfare; or else, it can't exist.
在救亡圖存的背景下，一切制度的移植，都必須貼上“國利民福”的標簽，否則就沒有生存的空間。