查询词典 alternating current

In alternating current the motion of the charges is periodically reversed; in direct current it is not.

在交流电中，电荷流动会定时的反向，而在直流电中则不会。

The resistance of a conductor is not constant for alternating current as it is for direct current.

导体的电阻对于交流电来说并不像它对于直流电那样是恒定的。

An electronic device which converts alternating current to direct current.

一种将交流电转换成直流电的电子设备。

The flowing of current first in one direction and then in another makes an alternating current.

电流先向一个方向流动，然后又向另一个方向流动构成交流电。

A device used to convert direct current into alternating current .

它表达了流动资产与流动负债之间的关系。

Furthermore, the deposition rate increases per unit of welding current by decreasing wire diameter, and adjustment of the penetration depth is enabled by alternating current wave form and polarity.

减少焊丝直径，能提高熔敷效率，再加上使电流波形交流化，就可以调整熔深。

Products and Service: DN series data-controlled alternating current projectiong welder ZDN data-controlled commutate spot welder UN data-controlled commutate spot welder DKR\DR capacitance energy storing spot welder FN alternationg and ZFNcommutate sewing welder DM direct current pulse spot welder seam welding machine of protectiong by gas for recti or cirol seam varity of special seam welding machine for poine stich AND DKR-350 capacitance energy storing spot welder has been certified whit national patent and DTN-100/DTN-150 has been honored with technology innovation award.

现主要产品有： DN系列数控交流式点凸焊机。 ZD数控次级整流式点焊机。 UN数控交流对焊机。 DKR、DR电容贮能式点焊机。 FN交流式和ZFN次级整流式缝焊机。 DM直流脉冲式电焊机。直、环缝气体保护焊接专机。各类焊接生产线。其中： DKR-350电容贮能式点焊机获国家专利。

When the cables use in alternating current system, rated voltage of cables should be at least equal the rated voltage of the system; When the cables use in direct current system,rated voltage should be not greater than 1.5 times of the rated voltage of the cables .

当电缆使用于交流系统时，电缆的额定电压至少应等于该系统的额定电压；当电缆使用地直流系统时，该系统的额定电压应不大于电缆额定电压的1.5倍。

Charger is the use of power electronic semiconductor devices, constant voltage and frequency of the alternating current to direct current conversion of a static inverter device.

充电器是采用电力电子半导体器件，将电压和频率固定不变的交流电变换为直流电的一种静止变流装置。

The present alternating current submerged are furnaces are resulted in low power factor,just because of the problems of inductance existing in current-carrying conductor, skin effect and interaction effect.

目前已有的交流埋弧炉，由于载流导体存在着电感、集肤效应、干扰效应等诸多问题，造成功率因数非常低。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷