backlitadj.背光的动词backlight的过去式和过去分词形式.backn.后面；背脊；靠背；后背；后卫vt.支持；后退adv.向后地adj.向后的；后面的；偏远的；过时的；积欠的back coupling oscillator反馈耦合振荡器back transient procedure反向瞬变过程back-tensioned drawing反张力拔丝Back Fist of Eight Gates八门通背拳back scatter coefficient后向散射系数back pressure transducer排气压力传感器back drilling attachment反钻附件back-up auto switch on备自投backparallel computation主从式并行计算backscattered ultrasound后向散射

1. The salesmen feed back information to the firm about its sales.
   推销员们把销售情况反馈给公司。
2. A lot of ideas are feeding back from applied science into the pure sciences.
   许多从应用科学反馈来的想法影响着理论科学的发展。