pentodes中文什么意思

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。