查询词典 DC

Fluxgate sensors have the second harmonic voltage amplitude with the magnetic field strength is proportional to the adoption of second harmonic filter through phase-sensitive detector rectifier, to achieve full-wave rectifier, low-pass filter in through the phase-sensitive detector after the second harmonic into a smooth DC signal, on the one hand to the back of the circuit, on the one hand, the magnetic flux through the door to feedback regulation, the opposite magnetic field generated with the measured magnetic field, so that the work has always been zero fluxgate magnetic field, thus ensuring the most high-precision fluxgate.

磁通门传感器产生的二次谐波电压幅值与磁场强度成正比，二次谐波通过通过滤波器再通过相敏检波器整流，实现全波整流，在通过低通滤波器将相敏检波后的二次谐波转化成平滑的直流信号，一方面送到后面的电路进行，一方面通过反馈调节送到磁通门中，产生与被测磁场相反的磁场，使磁通门始终工作零磁场下，从而保证磁通门的最高精度。关键词：磁通门磁力仪，相敏检波器，磁场

This is my summer outfit, says this Santa Claus from Washington DC who stands out from the other 150 Father Christmases and elves dressed in their fur-lined red suits.

这是我的夏装！」和其他一百五十位身穿滚毛红袍的耶诞老人及小精灵一比，他格外显眼。

Thirdly, according to the equivalent circuit of the dc motor, the dynamical model is set up. Then, the dynamical model for the hybrid-driven press is developed using Lagrange's formulation. The system's equation is derived using expressions for the system energy function, its partial and time derivatives with respect to the defined generalized coordinates.

其次，根据直流电动机的等效电路模型，建立了直流电动机的动力学模型和位置负反馈控制模型；应用拉格朗日方程建立了混合驱动压力机机电系统的动力学模型。

The DC power supply wire and connector wire drawn from power supply box should wiring buried wire as possible, exposed wire must be fixed by holding latch; Notch on the ground between transmitting antenna support and receiving antenna support, so that bury power supply wire and connector wire, geosyncline's surface need be covered with stainless steel bead.

从电源盒引出的直流电源线及连机线，应尽可能布暗线，明线须用卡固定；发射天线架与接收天线架之间须在地面开槽，以便埋下电源线及连机线，地槽表面需用不锈钢压条封盖。

"We observed and mapped multiple plumes of methane on Mars, one of which released about 19,000 metric tons of methane," says Geronimo Villanueva of the Catholic University of America in Washington, DC Villanueva is stationed at NASA Goddard and is co-author of the paper.

"我们观察和对应多个柱在火星上的甲烷，其中一个释放大约1.9万吨的甲烷，"维拉纽瓦说，赫罗尼莫的天主教大学，在华盛顿特区维拉纽瓦是驻扎在美国宇航局戈达德是的作者之一文件。

WHFC guys defense is better than other team,they always have GK and DC training.

战锤队的防守非常有特色，他们总是能强化门将和后卫的训练。

The giant magneto-impedance effect in DC current annealed Co71.8Fe4.9Nb0.8Si7.5B15amorphous glass-covered wires is presented.

本文研究了直流焦耳处理对Co71.8Fe4.9Nb0.8Si7.5B15玻璃包覆非晶丝巨磁阻抗效应的影响。

The giant magneto-impedanceeffect in DC current annealed Co71.8Fe4.9Nb0.80.8Si7.57.5B1515 amorphous glass-covered wires is presented.

本文研究了直流焦耳处理对 Co71.8Fe4.9Nb0.80.8Si7.57.5B1515 玻璃包覆非晶丝巨磁阻抗效应的影响。

The data between electric current and workable feed gas is obtained on the basis of DC glow discharge.

本文在直流辉光放电的实验基础上，得到了电流密度与可加工原料量的最佳组合数据。

A device and method for preparing compound nano fiber endless tow, which contains feeding material liquid to pair of electric spinning nozzle on frame, each nozzle respectively applied with high dc voltage with opposite polarity, each pair of nozzle jetting out nano fiber with opposite electric charge, said nano fiber attracting and colliding each other to form compound nano fiber, then forming nano fiber endless tow after drawing and stretching, the first opposite set pair of electric spinning nozzle jetted compound nano fiber endless tow is stretched down and used as acceptor which covered by the nano fiber jetted by second pair of nozzle an d forming two layers of compound nano fiber endless tow after drawing and stretching, in turn to get multilayer compound nano fiber endless tow after drawing and stretching by godet roller.

复合纳米纤维长丝束制备装置及其制备方法是一种简单、高效电纺制备纳米纤维长丝束的方法，其步骤为将料液输送给支架(3)上的电纺喷头对(1)；喷口相向的电纺喷头对(1)的每个喷头分别施加相反极性的直流高电压；每对相向喷口喷出分别带相反电荷的纳米纤维，并在空中相互吸引、碰撞形成复合纳米纤维，经牵引、拉伸后形成复合纳米纤维长丝束；第一对相向放置的电纺喷头纺丝形成的复合纳米纤维长丝束向下拉伸，并作为接受体与第二对电纺喷头喷出的分别带相反电荷并相互吸引的纳米纤维在空中相遇，被第二对电纺喷头喷出的纳米纤维包裹，经牵引、拉伸后形成两层复合纳米纤维长丝束；依次类推，最后经导丝辊对(2)牵引、拉伸后得到多层复合纳米纤维长丝束。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。