查询词典 stamp-collector

In order to overcome the destruction of the electrical network disturbance to the current collector,at present UPS is widely used as a sensitive power supply.

为了克服电网干扰对用电设备的破坏，目前广泛采用UPS为敏感用电设备供电。

Therefore, if we have a way of holding emitter current constant through a transistor, the transistor will work to regulate collector current at a constant value.

于是，只要我们能让晶体管的发射极电流保持恒定，它就能保持发射极电流为恒定值。

We know that in a transistor operating in its active mode, collector current is equal to base current multiplied by the ratio β.

我们知道，当晶体管工作在放大区时，集电极电流等于基极电流乘以系数β。

We've seen already how maintaining a constant base current through an active transistor results in the regulation of collector current, according to the β ratio.

我们已经看到有源晶体管的恒定的基极电流是如何以系数β控制集电极电流的。

Collector current is proportional to concentration of dopamine in the range over 5.0×10〓mol/L to 5.0× 10〓mol/L and remains independent of ascorbic acid concentration to approximately 5. 0×10〓mol/L.

由于在收集电极上消除了由电位变化引起的充电电流和阴极-阳极工作时的反馈作用，多巴胺的检测限可达7.5×10〓mol/L，线性范围为5.0×10〓～5.0×10〓mol/L。

Gas diffusion layer is one of the most important components in proton exchange membrane fuel cell. The contact resistance between current collector and gas diffusion layer is an important part of the total resistance of fuel cell and is also a key factor led to the power loss of PEMFC.

气体扩散层是质子交换膜燃料电池的重要组件，其与极板之间的接触电阻是燃料电池内阻的重要组成部分，也是导致燃料电池功率损失的重要因素。

According to the present situation of Guangzhou subway line 4, a control system based on programmable logic controller is presented, which can be used to alternate the working mode of subway locomotives between contacting collector and pantograph for collecting current.

介绍受电弓和受流靴这两种受流器各自的优缺点及工作原理，并针对广州地铁4号线运行中的实际情况，提出了受流方式转换过程的技术要点，设计了一种由可编程序控制器为控制核心的系统，该系统可控制地铁列车在两种受流方式之间的转换。

The force between electrode and current collector affected by PPy coating was also investigated.

采用原位聚合法，在阳极表面进行聚吡咯包覆以提高水溶液锂离子电池循环寿命。

It can stead of the collector ring,carbon brush of winding motor.

它可以代替绕线电机的滑环、碳刷及其起动装置。

Example and analysis of generator collector ring brush faults

主要介绍了中铝公司山西分公司自备热电厂6台发电机组的励磁机电刷打火的常见原因的分析和处理方法。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。