single-polarity pulse [电子] 单极性脉冲
double-polarity pulse-amplitude modulation [通信] 双极性脉冲调幅
start polarity pulse 启动极性脉冲
pulse polarity [电子] 脉冲极性
single polarity pulse 单极性脉冲
single polarity pulse sources 单向强脉冲场源
single-polarity pulse-amplitude modulation 单向脉幅调制
pulse polarity selector 脉冲极性选择器
The positive polarity pulse will make better result for the samples than use negative polarity pulse.
对平行极化、方向指向阳极的样品，只要极化电场强度不是很大，宜选用正极性极化脉冲；
The high-power IGBTs are adopted to design the dual inverter arc-welding power source for variable polarity pulse MIG welding.
提出采用大功率IGBT设计变极性脉冲MIG焊双逆变弧焊电源。
Pulse current, arc polarity, arc voltage and metal transfer of variable polarity pulse MIG welding are controlled by 80c196kc coordinately to implement the stable welding procedure.
单片机协调控制变极性脉冲MIG焊的脉冲电流及电弧极性、电弧电压及熔滴过渡频率，实现了稳定的焊接过程。
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