查询词典 alternating current

The control effect of electromagnetic force on cylinder wake, lift force and drag force, which was caused by alternating current, is related to its frequency.

而交流电所产生的电磁力对于绕流涡街、升力、阻力的控制作用，则与所使用的频率有关。

An old term for an electric generator that produces alternating current.

对能产生交流电的发电机的老的称呼。

On the railway of electrization, power supply mode is requested to be the single-phase alternating current.

在铁道电气化牵引区段，牵引供电网采用单相工频交流电供电方式。

A new control method for CJD alternating current electrodynamometer by using fuzzy control strategy based on major dynamics including non-linearities,instabilities and load disturbances is presented.

针对CJD 交流电力测功机实验过程中的非线性、不稳定性和负荷干扰，基于模糊控制策略下给出了CJD 交流电力测功机转速新的控制方法。

Alternating current electromotor is one of important chapters in the teaching of"electrotechnics"and"television".

三相交流同步和异步电动机都是靠其定子旋转磁场来工作的，故旋转磁场是交流电动机的基础和关键。

Ventricular fibrillation is induced by alternating current delivered to right ventricular endocardium, which is the primary technique of establishment of animal model of CA in rat and in mouse currently.

本研究的目的之二是观察经食道心脏起搏在窒息性CA大鼠CPR中的疗效，探讨其作用机制和影响因素。药物在CPR中起重要作用。

According to the requirements for alternating current sampling, four feasible schemes (full-wave rectification, double 4051, raised analog ground and adder technique) are systematically contrasted in this dissertation. The hardware and software of this instrument are also analyzed in great detail.

本文围绕交流直接采样的技术要求，详细地对比分析了四种可行性设计方案，其中包括全波整流、双4051、模拟地抬高及加法器方式，并对其硬件实现和软件编程进行了详细的分析与论证。

Today's alternating current power grid evolved after 1896, based in part on Nikola Tesla's design published in 1888.

今天的交流电网发展1896年后，在1888年发表的关于尼古拉特斯拉的部分设计为基础。

Related to a wireline log of formation resistivity based on the principle of inducing alternating current loops in the formation and measuring the resultant signal in a receiver.

基于在地层中的感应交变电流环而测量接收器所接收信号的一种电缆式地层电导率测井，感应和这种测井有关。

Based on matrix analysis of motor and general theory of alternating current machines,3-phases induction synchronous motor is substituted for symmetrical 2-phases motor with even gas,then the equation for instantaneous torque of induction synchronous motor step motion is obtained.

文中采用了电机的矩阵分析方法，根据交流电机统一理论，将三相感应式同步电机用等效的具有均匀气隙的两相电机来代替，得出了感应式同步电机步进运动的瞬时转矩表达式。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。