电流

As an ammeter, the electrometer is capable of measuring extremely low currents, limited only by theoretical limits or by the instrument's input offset current. It also has a much lower voltage burden than conventional DMMs.

做为安培计，静电计能够测量仅由理论极限值或仪器的输入偏置电流所限制的微弱电流，而且其输入端压降比普通的数字多用表要低的多。

Note that the input offset current can be partially nulled by enabling the INSTRUMENT current suppress with the input terminals disconnected and ZERO CHECK open.

要注意，在仪器电流抑制的条件下，即输入端不连接和"ZERO CHECK"开路时，输入失调电流可部分无效。

R2 and R4 are chosen to minimize errors due to input offset current as outlined in the section describing the photocell amplifier.

R2和R4用来降低因输入失调电流产生的误差，其原理与前文光电二极管放大器所述一致。R3用于抑制灯泡L1初次通电时的浪涌电流。

The instantaneous current when the transistor is turned on is very high and some small-signal transistors will not deliver the required current.

瞬时电流，当晶体管处于开启状态非常高，一些小信号晶体管将无法提供所需的电流。

Basing on analyzing the work principle of the current control methods, it can be given the detailed derivation process basing on the grid and inverter pulse width modulation algorithm and the duty cycle of the instantaneous current control.

在分析了电流控制方法工作原理的基础上，给出了基于瞬时电流控制的并网逆变器的脉宽调制算法和占空比的详细推导过程。

Harmonic current; reactive current; instantaneous reactive power theory; matlab simulation

谐波电流；无功电流；瞬时无功功率理论；Matlab仿真

The MATLAB simulation software is used to model the harmonics detection circuit, which is based on the instantaneous reactive power theory.

通过对基于瞬时无功功率理论的一种谐波电流检测方法的研究，利用MATLAB仿真软件建立了相应的仿真电路，就其中的低通滤波器对谐波电流检测效果的影响进行了仿真研究。

The research is mainly about the harmonic current detection method that based on the instantaneous reactive power theory.

所提出的检测方法用模拟电路加以实现，可对谐波电流、无功电流进行分别检测或综合检测。

The adaptive current and voltage instantaneous trip protective relays overcome the shortcomings of the conventional ones, such as their unchangeable settings and their protect range depending on system operating conditions and the type of fault.

自适应电流、电压综合速断保护克服了传统的单独的电流保护和电压保护一成不变的定值、保护范围受系统运行方式和短路类型的影响等缺点，可使保护范围始终保持在最优的状态。

Simulation and experimental results indicate that for the SPWM inverter based on instantaneous output voltage feedback control,the fundamental open circuit output voltage incr...

仿真和实验结果表明，对于采用瞬时输出电压反馈控制技术的SPWM逆变器，其输出电压在空载时随着死区时间的增加而增加，负载电流超过临界电流后其输出电压随死区时间增加而下降；其阻性负载时的外特性曲线是一条先下降后上升的曲线。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。