查询词典 DC

This paper introduces the composition of the DC amplifier using a magnetic modulator in order to improve the property of the modulator,a discussion is held about the relation of its sensitivity to its size and its signalwinding,thus establishing the condition for obtaining maximum sensitivity.

介绍了磁调制式直流放大器的构成，围绕提高磁调制器的性能进行了讨论，给出调制器的灵敏度与其结构尺寸及信号绕组匝数之间的关系，并确定了获得最高灵敏度应满足的条件。

Switching power amplifier of magnetic bearing worked in hard switching. To overcome drawbacks of large loss of switching and current harmonic distortion, a parallel resonant DC link soft-switching power amplifier was adopted in this paper.

为克服磁悬浮轴承开关功率放大器工作在硬开关状态时存在的开关损耗和电流纹波干扰严重的缺点，提出一种磁悬浮轴承并联谐振直流环节的软开关功率放大器电路。

Since the late 1990s, fully absorb the CAS technology, in accordance with ISO 9002 quality system standards, the use of advanced technology and the anaerobic first-class production equipment, has been able to stabilize production of high-performance permanent magnet NdFeB magnets 300 tons / year, PM ferrite magnets 500 tons / year, the machine produced a variety of strong magnet, while manufacturing magnetic separator, Qiangci Separators, magnetic drum, Cibang, Jiangci salvage, super-magnetic, permanent magnet DC - Watt, water-purification Anti-magnetic, magnetron sputtering equipment, products sell well all over the country and exports of the United States, Germany, South Korea, North Korea, Vietnam and Hong Kong, Macao and other countries and regions, won the trust of customers.

公司自九十年代末，充分吸收中科院技术，按照ISO 9002质量体系标准，采用先进的无氧工艺和一流的生产设备，已能稳定生产高性能永磁钕铁硼磁铁300吨/年，永磁铁氧体磁铁500吨/年，可加工制作各种规格的强磁铁；同时制造磁选机、强磁除铁器、磁滚筒、磁棒、强磁打捞器、超强磁力架、永磁直流电机瓦、磁化净水防垢器、磁控溅射设备等，产品畅销全国各地并出口美、德、韩、朝、越南及港澳台等国家和地区，深得客户信赖。

Main features:- Hole spacing 2.25mm-operating voltage: 4.5 V to 24 V-switching offset compensation at 62Hz under - over-voltage Protection - VDD-pin Reverse voltage protection - Short circuit protection open-drain output is hot off - working magnetic field range: DC to 10kHz-output goes low with magnetic south pole contacts marked on the package side, while the higher magnetic flux density and area of S1, As S2-all temperature and supply voltage range magnetic parameters on-chip temperature compensation circuitry of the minimum drift - EMC meet DIN40839.

主要特点：–霍尔片间距2.25mm–工作电压： 4.5 V 至 24 V–开关偏移补偿在62Hz下–过电压保护– VDD-pin反向电压保护–短路保护漏极开路输出被热关断–工作磁场范围：直流到10kHz–输出变低用磁场南极接触封装上有标记边，而更高磁通量密度面积S1，如同S2–全温度和供电电压范围下磁参数的片上温度补偿电路的最小漂移– EMC适应DIN40839。

If the dc motor is adjusted so that the system rotation in a direction opposite to the stator rotating magnetic field, the torque will be in the direction of the rotating field but will oppose the motion of the rotor.

如果调整直流电机，使得系统的转向与定子旋转磁场的方向相反，则转矩的方向与旋转磁场的方向相同但是与转子的方向相反。该转矩称为制动转矩。

Optical fiber magnetic field sensor is obtained by coating the TbDyFe film around the naked polarization maintaining fiber by mean of DC magneton sputter technology.

通过直流磁控溅射镀膜，将磁致伸缩材料———铽镝铁被覆在一段去掉保护层的保偏光纤上，得到铽镝铁被覆保偏光纤结构的磁传感单元。

2TheMax GPX750 PSU for the desktop computer features total output of 750W, rated supply voltage of 115V to 230V auto range, rated mains frequency of 47 to 63 Hz, rated input of 115V at 10A or 230V at 5A, efficiency of 85% minimum at typical load, holdup time of 16.6ms at nominal line under full load condition, power good signal between 100ms to 500ms, over current protection at 110% to 150% individual output power, over voltage protection for +5V is between 5.8V to 6.3V,+12V from 14V to 17V, 3.3V from 3.6V to 4.2V, air flow by DC fan, operating temperature of 0°C to 50°C and operating humidity of 20% to 90% non-condensing.

2themax gpx750电源为桌上型电脑的功能总产量750瓦特，额定电源电压115v到230v汽车范围，额定工频47至63赫兹，额定输入的115v在10 A条或230v在5 ，效率85 ％，最低在典型负载，持的时间16.6ms的名义在网上下，满负荷条件下，电源良好信号之间的100 ms到500ms ，过电流保护在110 ％至150 ％个别的输出功率，过电压保护，为5 V是之间的5.8 V至6.3v ，+12 V的从14v至17v ，电压为3.3 V从V到3.6 V至4.2 V ，空气流量由直流风扇，操作温度0° C到50 ° C和运作中的湿度为20 ％至90 ％，非冷凝。

In other words this makes it easy to derive a voltage of roughly 320V (+/- around 15%) DC from any mains supply in the world, this can then be fed into a relatively simple switched mode power supply.

换句话说这使它容易派生的大约 320V +/-15%左右）的电压从世界上任何电源直流，这可以然后被送入一个相对简单的开关的模式电源。

Maisie spicy in the DC tears, while Chicai side of drinking water, this is her first time to eat Sichuan is also the last time.

Maisie辣得直流眼泪，一边吃菜一边喝水说，这是她第一次吃川菜也是最后一次。

I am a female Chinese Malaysian, living in the Washington DC area in the United States .

我是一个女的马来西亚华人，居住在美国华盛顿地区的美国。

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。