7 负脉冲(negative pulse)：脉冲信号跃变后的值比跃变前的值低，称为负脉冲。 8 数制(a system of computation)：数的进位和计算方式。
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negative-pulse 负脉冲
negative pulse corona 负脉冲电晕
negative pulse voltage 脉冲负偏压
negative pulse stuffing 负脉冲填充
positive and negative pulse 正负脉冲
positive-negative pulse stuffing 正负脉冲塞入
The rate of penetration of the negative pulse jet assisted drilling can increase from 0.7 to 3.0 in in-house simulation drilling compared to conventional drilling.
与常规钻井相比，室内模拟钻井试验条件下负压脉冲射流辅助钻井可以使钻速提高0.7-3.0倍。
The influence of negative pulse voltage applied directly to stainless steel samples on plasma characteristics has been found to be negligible, except sample sputtering.
直接施加于试样的脉冲负偏压对等离子体特性没有明显影响，但存在着一定的溅射作用。
On the bipolar-pulse mode HIPIB apparatus, a planar diode model of self-magnetic field MID is proposed for analysis of the diode behaviour during the negative pulse stage.
通过建立平面离子二极管模型，分析了负脉冲阶段二极管中初始等离子体的形成。
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