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Back electromotive force was measured by continuous pulse-computer and the influencing factors for back electromotive force and current efficiency were studied in detail.

研究了在SrCl2-SrF2-BaF2的电解质体系中熔盐电解法制备高浓度Al-Sr合金，采用连续脉冲-计算机法测定电解过程的反电动势并且对反电动势和电流效率的影响因素进行了详细的研究。

In this paper, the change of back electromotive force current with the different PWM modes are analyzed in detail on the base of BLDCM model. According to theory and experiment ,ON-PWM type restrains the peak value of back electromotive force current and brings the lest effect to the motor control system.

基于无刷直流电动机的数学模型，分析比较了不同PWM调制方式下反电势电流的变化规律，并通过理论推导和仿真实验证明了当电机系统采用ON-PWM调制方式时，能有效地抑制反电势电流的峰值且对电机控制系统造成的影响最小。

If I could do a back flip, I would do a back flip.

如果我能后空翻我会翻一个的。

I'd had an amazing time, but I guess I needed to take a step back, reconnect with normal life and bring the focus 100 percent back to music.

已经有了一段令人难以置信的经历，我想我需要退后一步，重新回归到普通人的生活，百分之百地投入到音乐中。

Finally, I stepped back to snap some pics, patted myself on the back for a job well done and made sure my wife and dog would not interrupt the drying process.

最后，我回到加强管理单元的一些照片，拍拍自己在背部，为做了出色的工作和取得的肯定我的妻子和狗不会中断干燥过程。

Mark the line on back panel and at the marked line drill four holes on back panel.

我们首先在背板上划好线并在划线位置用电钻在背板上打四个孔，然后用冲击钻打孔。

Other times it means that you have to play Alex back to back.

其他时候，这意味着你必须发挥徐家背靠背。

Please sit back to back and we will play a game.

请背靠背坐，我们来玩一个游戏。

It is free of the affect of the back pressure and can perform well under high back pressure.

不受背压的影响，在高的背压下能很好地工作。

I want to get back to my best, so I need to get back to playing under pressure and finding the concepts in my game.

我希望恢复自己的最佳状态，所以我需要在竞争激烈的比赛里找回自己的打球节奏。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。