直流的

The treeing initiation voltage of samples being DC pre-stressed after short-circuit is measured.

测出了在直流预压电压下的短路电树枝的起始电压。

In power converters, unbalances generate undesirable DC ripple and non char ac teristical harmonics in the ac side.

在电力变换器中，不平衡会产生不希望的直流波动以及交流侧无特征的谐波。

By removing a pole the same approach can be used for a DC switchboard, offering a "Universal" topology.

通过移除一个基点，在直流配电板上可以采用同样的方法，即提供了一个&通用的&拓扑结构。

By removing a pole the same approach can be used for a DC switchboard, offering a "Universal" topology.

通过移除一个基点，在直流配电板上能采用同样的办法，即提供了一个&通用的&拓扑结构。

2 All outgoing line circuit breakers should be bipolar manual extraction type air magnetic circuit breaker on the basis of O-CO and the breaking current of lower than 220V DC.

6.3.8.2 额定250 A的所有出线断路器应为具有O-CO基础上242伏直流下遮断电流额定值的两极手动抽出式空气磁力断路器。

1 Incoming circuit breaker should have the bipolar manual extraction type air magnetic circuit breaker of the short-time selective trip device, on the basis of O-OC and with rated breaking current of lower than 220V DC.

6.3.8.1 进线断路器应为具有O-CO基础上250伏直流下遮断电流额定值的，装有短时选择跳闸装置的两极手动抽出式空气磁力断路器。

Through testing practically and calculating theoretically, this paper has evaluated generally the energy consumption of the SCR arc welding power source?the DC arc welding generator and the inverter arc welding power source for manual arc welding machine used in production.

通过实际测试与理论计算，对晶闸管整流电源弧焊机、直流弧焊发电机和逆变电源弧焊机等生产中常用的焊条电弧焊焊机的耗电量情况进行了综合评价。

Stirring characteristic of metal bath in the DC arc furnace with different bath parameters was studied by combining Maxwell's equations with Navier-Stokes equations.

通过将直流条件下的Maxwell方程和Navier－Stokes方程相结合，研究了熔池参数变化对炉内熔体搅拌产生的影响。

I am the company's sales of the products are: multiple programmable electronic load machine (SM-268ATE, SM-5500ATE + PC), single-group e-load machine, ROHS environmental tester, X-ray fluorescence analysis LAU, the power of digital, analog, digital oscilloscope, power analyzer PM100/300, DC power supplies, power inverter, high-pressure machine, ground resistance tester, LCR, chargers tester, battery charging and discharging tester, resistors, electronic Burn rack, automatic switching from PIN about testing a dual-governance (SM-2200DE), and other products.

目前我公司的销售的产品有：多组可程式电子负载机(SM-268ATE，SM-5500ATE+PC)，单组电子负载机，ROHS环保测试仪，X射线萤光分析仪，数位功率计，类比，数位示波器，电力分析仪PM100/300，直流电源供应器，变频电源，高压机，接地电阻测试仪，L.C.R，充电器测试仪，电池充放电测试仪，电阻，电子烧机架，自动脱PIN左右切换测试双治具(SM-2200DE)等产品。

OPDM door system,simple and clean,it can install on the door leaves,and on the door bearing,even under the floor.Easy install,maintain convenient.

OPDM门机是由直流马达和微型处理控制器，可同时控制双门扇的运行，并实现完美的双门同步运行。

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。