At the present , the common methods for testing the moisture content of the textile were the oven method and the direct - current resistance method 目前，常用的纤维水分测试方法有烘箱法和直流电阻测湿法。
It is suitable to be used as precise measuring standard and precise ac / dc resistance standard for factories , colleges , and research institutes 适用于工厂、学校和科研单位作精密测量及精密交/直流电阻标准。
At quiescent conditions , the power supply voltage appears on the plate ( minus a little loss due to the ir loss in the transformer 在静态条件下，高压直接加载在屏级上（减去一点在变压器初级的直流电阻上的损失） 。
The d . c . resistance of each phase is also checked against the calculated resistance value for the stator and for balanced resistance between each phase 每个相位的直流电阻也经过与定子的设计负载电阻值进行核对，以确认能够在每个相位之间进行平衡。
But the former consumed energy and cost time and unfavorable for the quick - test situation . the stability , accuracy and interchangeability of the former were worse , and therefore , its use was limited 但烘箱法耗能费时，不利于需要快速测试的场合；直流电阻测湿法的稳定性、准确性和通用性较差，应用场合十分有限。
The composition , principle , methods of measurement and design of the software for the semi - automatic verification system of dc resistance box are introduced , and the feasibility of the system is testified in this article 摘要简要介绍了直流电阻箱半自动检定系统的构成、工作原理、测量方法及软件设计，并对该系统的可行性进行了验证。
The second paragraph ( the alternating resistance characters on the textile fiber ) : based on deeply analyzing the electric and dielectric conductivity of the fiber , the defects of the direct - current - resistance method were pointed out 第二章纺织纤维的交流阻抗特性：深入分析了纤维材料的导电性和介电性质，指出了现行直流电阻法测量纤维水分存在的缺陷。
Also , cathode bias circuits ( with bypass capacitors ) are not very successful , since for dc bias purposes , the cathode resistor presents a high dc resistance equivalent at the anode , and the quiescent point is not very stable 而且，阴极偏压电路（带旁路电容）也很难成功，因为直流偏压的原因，阴极电阻在屏级上表现出很高的等效直流电阻，这样静态工作点很难得以稳定。
Each unit of transformer is tested in accordance with the following items : winding d . c resistance test . measurement of turn ratio and calibiation of voltage vector relation . measurement of impedance voltage and load loss 直流电阻测试匝数比测量及电压矢量关系的校定阻抗电压及负载损耗的测量空载损耗及空载电流的测量工频耐压测试感应耐压测试绝缘电阻测试局部放电测试外观和尺寸的检验铭牌的检验等。
Transformer ' s dc resistance measurement is one of the primary item before transformer leaving factory and precautionary test . the inherent time constant of transformer is quite long , so it is very important to study how to shorten the measuring time 电力变压器直流电阻测量是变压器出厂及预防性试验的主要项目之一，但电力变压器固有的时间常数较大，研究缩短电力变压器直流电阻的测量时间具有重要意义。
