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1.In communications, the connection, by a common carrier, of the output portion of a circuit back to the input portion of a circuit.
在通信技术中，通过公共载体将电路的输出部分返回到电路的输入部分的一种连接。收藏指正
2.For instance the nuclear-powered submarine of our China ran to the United States to wrap up circuit, american warship is frightened will be run back to.
比如我们中国的核潜艇都跑到美国兜了一圈，美国的军舰都吓来跑回去了。收藏指正
3.⑶AGC(automatic gain control) is used, namely, peak voltage of back wave signal after sampled is input to microprocessor, then A/D converter, D/A converter, gain control adjusting circuit to realize back wave signal AGC.
⑶采用自动增益控制,即回波信号的峰值电压经过采样后进入单片机进行 A/D 转换,再经过 D/A 转换和增益控制电路,形成回波增益的自动控制;收藏指正
4.The cost advantage of using packet communications is so great that an entire industry has formed to translate circuitbased voice into packet voice, routing the transformed voice over the packet network and then converting it back into circuit-based voice.
利用包通信的价格优势如此巨大，以至整个业界已经组织起来，把基于电路的语音转变成包语音，再把转换过的语音在包网络上通过路由传输，然后再转换成基于电路的语音。收藏指正
5.a circuit that feeds back some of the output to the input of a system.
能够把输出系统反馈给输入系统的线路。收藏指正
6.State-of-the-art safe rooms include an independent phone line, a back-up generator, oxygen scrubbers to replenish the air supply, and closed-circuit television screens connected to computers.
最新式的安全密室有一根单独的电话线、备用发电器、补充空气的氧气更新器以及连接电脑的闭路电视屏。收藏指正
7.This paper describes experimental device for measuring the moisture content of grain quickly by using the method of the capacitance measure:nent. B means of non-transform bridge circuit which is consisted of two amplifiers hay realiazed the automatic examination and the feed-back control of moisture contents during the rrccess to diy grain. The measurement resolution of the deviec can be achieved up to 10-14F.
本文介绍了一种用电容测量法快速测量粮食水分的试验装置．在干燥粮食的过程中，利用含有两个放大器的非变压器桥路自动测量粮食水分并进行反馈控制．此装置的测量分辨率可达10－14F．收藏指正
8.Changes in the electrical properties of back-field Si solar cells, induced by the simulated space proton environment, were studied. The proton energy was 60 keVand 150 keV, and the proton fluence was from 1 × 1013 to 2 × 1016 cm-2. This experiment indicated that the open-circuit voltage ( Voc), the short-circuit current (Isc) and the maximum power output (Pmax) suffered big degradations with the proton energy and the proton fluence increasing.
研究了在模拟空间质子辐照环境条件下,质子能量分别为60 keV、150 keV,辐照剂量为1×1013～2×1016cm-2时,背场硅太阳电池的电性能的变化。 试验表明,电池的开路电压Voc、短路电流Isc、最大输出功率Pmax随着质子能量和辐照剂量的增加出现了大幅衰降。收藏指正
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