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.
该通信系统还受背景光、雪崩光电二极管（APD）增益和调制消光比等因素的影响。
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，清末知识精英掀起一股尚侠思潮。
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.
在救亡图存的背景下，一切制度的移植，都必须贴上“国利民福”的标签，否则就没有生存的空间。