Methods 375 heat stress exposed workers, 674 high-frequency electric field exposed operators, 350 VDT operators and 102 noise exposed workers were examined.

方法对我市375名高温作业工人、674名高频电场作业工人、350名视频作业人员及102名噪声作业工人进行了心电图检查分析。

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As the doohickey hummed away at a very high frequency-a whopping 6 billion cycles per second-the "piezoelectric" material in it produced a warbling electric field that was easy to detect.

当这个小装置以每秒60亿周的高频速度振荡时，它表面的“压电”材料会产生一个很容易被检测到的振动电场。

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It researched the experimental method of high-pulsed electric field to milk's sterilization, which measured the sterilization ratio in different electric field intensity, treatment time and frequency.

介绍了利用高电压脉冲电场对牛乳灭菌的试验检测方法，并进行了不同电场强度、脉冲频率及处理时间对牛乳灭菌效果的对比试验。

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