high frequency tube generator 高频管发生器
medium frequency tube [电子] 中频管
electrostatic-controlled super high frequency tube [电子] 静电控制超高频管
frequency converter tube [电子] 变频管 ; 变频真空管
"The frequency of ventilating tube insertion in the experimental group was not related to obesity, whether measured by BMI or triglyceride or total cholesterol concentration, " the authors write.
该作者还写道：“不论是测量体重指数、甘油三酯浓度或总胆固醇浓度，实验组患儿耳部置管术的频率均与肥胖症不相关。”
The tweeters feature B&W's Nautilus tube-loaded design claimed to dampen resonance and improve high-frequency sounds.
高音采用了B&W的鹦鹉螺管装的设计，很好地遏止共振并增强高频表现。
An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation.
速调管一种用速度调节的方法放大或产生超高频率的电子管。
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