adj. 【无线电】五极的。 n. 【无线电】五极管。 a radio-frequency pentode 高频五极管。 a beam pentode 电子注管。
a thermionic tube having five electrodes
例句与用法
1.
Since a pentode presents a fairly constant current sink , trying to power it from a constant current source will be fairly unsuccessful , sort of like the unstoppable object hitting the immovable object 因为五级管本身就表现得类似恒流陷阱（意思是消耗恒定的电流） ，试图用恒流源驱动五级管只会是个失败，就好像试图用一个停不下来的物体去打击一个不可移动的物体。
2.
The paper reviews the three pentodes about urban e - government research , narrates the research progress of service functions , sustainable ability , spatial distribution and models , development motives and key functions on urban e - government functionality from the view of home scholars 摘要回顾国内城市电子政务研究的三个时期，评述国内学者对我国城市电子政务的服务职能，可持续发展能力，空间格局影响，模型，发展动力与核心功能5个方面的研究进展。
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