loop n. 1.(用线、带等打成的)圈,环,匝,框,环孔,线圈;【医学】(常 the loop)宫内避孕环。 2.环状物,塔环,拎环。 3.(铁路上的)让车道,环道。 4.【无线电】回路,回线,波腹,环形天线。 5.【数学】自变;【计算机】循环;(程序中)一群指令的重复。 6.【航空】翻圈飞行,翻筋斗;【溜冰】(单脚)打圈儿。 7.〔美国〕闹市区;〔the L-〕 芝加哥的商业区。 a safety loop保险圈。 a wire loop钢丝套圈。 knock [throw] for a loop 〔美俚〕 1. 使神志不清;打昏,使醉倒。 2. 给人极好的印象。 3. 出色地通过[做成]。 on the loop 〔美国〕在匆匆旅行中。 out of the loop 在圈内人物之外的,不在…圈子内的。 vt. 1.使(绳等)成圈,打成圈;【电学】 把导线连成回路。 2.用圈围住;(用环)箍住。 (up back). 3.使作成环状运动;【航空】翻筋斗。 vi. 1.打环,成圈。 2.【航空】翻筋斗。 3.(像尺蠖似的)伸屈前进。 loop the loop 【航空】翻筋斗;(骑自行车等)兜圈子。
Because the pt secondary loop voltage drop directly affects the accuracy of the electric energy measurement . after consulting a great amount of materials , the best method to reduce the pt secondary loop voltage drop was put forward based on analyzing the cause of which 由于电压互感器二次回路压降直接影响电能量计量的准确性,严重时会危及电力系统的稳定运行,因此本文从分析电压互感器二次压降的形成机理入手,并提出最为合理的二次压降治理方案。
After introduction of the tranlinear loop principal , the bjt current controlled conveyor has been designed by using mixed tranlinear loop voltage follower . as for modern integrated circuit , the model of mos transistor , the active resistance and the current mirror integrated circuit formed by mos transistor are introduced . the cmos current controlled conveyor has been derived from mixed tranlinear loop cmos voltage follower based on weak inversion operation 针对现代集成电路的工艺,本文对mos晶体管的工作原理进行了简要的叙述,讨论了有源电阻和电流镜的实现方法,并利用mos晶体管的亚阈值特性组成混合跨导线性回路完成对应的电压跟随器的设计,推导出了基于cmos技术的电流控制传送器。
The pt secondary loop voltage drop is a changing amount and has the characteristics of indirection and certain randomness . the second , according to the cause of pt secondary loop voltage drop , the different methods to reduce the pt secondary loop voltage drop were analyzed and the conclusions are draw as below : 1 . changing bigger section wire and maintaining the connector plugs regularly can reduce the pt secondary loop voltage drop effectively , but ca n ' t guarantee which meets the relevant rules 首先,通过对电压互感器二次压降的形成机理进行分析,得出以下关于二次压降的相关结论: 1 、电压互感器二次压降等于二次回路阻抗和回路电流的乘积; 2 、电压互感器二次回路阻抗分为元器件自身阻抗和接触阻抗两部分,且接触阻抗占主要部分,从而使得电压互感器二次回路阻抗具有动态特性,而且具有一定的随机性; 3 、电压互感器二次回路电流与二次负荷和回路阻抗大小相关,因而二次回路电流也是变化的; 4 、电压互感器二次压降是一个变化量,且具有单向性和一定的随机性。