电流

In order to resolve such question,an optic-fiber current measurement system with simple structure and suitable for high voltage frequency converter was developed based on Faraday effect and principle of optic -fiber current sensors,where a high circular bi-refractive optic-fiber coil was used as a current s...

鉴于光纤传感可以解决上述问题，基于偏振态调制的光纤电流传感器原理，研究一种适用于高压变频器的小巧的，基于法拉第磁光效应的高圆双折射光纤电流检测系统，用Jones矩阵对光纤系统进行分析。

It is verified that a proper magnitude of linear to loop current ratio will results an omnidirectional circular polarized wave with same pattern for all transverse electromagnetic field in the far field but not in the near field or vise versa.

验证适当强度比例之线电流与环电流可在远场辐射四方均匀之圆形极向波，且所有横向电磁场之瞬间场形均相同，但在近场则否，或反之亦然。

When the secondary circuit is closed, both primary and secondary currents set up a flux in the core.

当次级电路接通时，初级电流和次级电流都在铁芯内建立了一个磁通量。

Circuit: A closed path followed or capable of being followed by an electric current.

电路：一个通过电流或可通过电流的封闭路径

A closed path followed or capable of being followed by an electric current.

电路：一个通过电流或可通过电流的封闭路径

Electrorheological technology is a new and marginal science, electrorheological fluid is a kind of smart material, with the control of external applied electric field, its coefficient of viscosity and shear yield stress can rapidly change, and this process is controllable, continuous, and reversible.

电流变技术是一门新兴的边缘科学，电流变液是一种智能材料，在外加电场的控制下，它的表观粘度和抗剪屈服应力可发生快速、可控、连续、可逆的变化。

We also know that the ratio between collector current and emitter current is called α.

我们还知道集电极电流与发射极电流之间的系数是α。

At low frequencies, the current in the collector of a transistor is in phase with the applied current at the base.

在低频段，晶体管的集电极电流与施加在基级的电流同相。

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。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。