The refined effect of electric pulse depends on the charged frequency of capacitance, oscillatory frequency of circuit and the density of current.
电容的冲击频率和电路的自振荡频率对细化效果起着关键性的作用。
In 10 of the 12 countries studied, current pre-service training is insufficient to maintain the existing density of health workers once all causes of attrition are taken into account.
考虑到所有人员耗损的因素，在12个被研究的国家中，有10个国家的当前岗前培训不足以维持现有的卫生工作者的密度。
In the simplest setup, the size of the current reveals the density of electrons in the surface, allowing it to be mapped out.
在这个最简单的装置里，电流的大小表明了样品表面电子的密度，并能绘制出来。
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