然而，有时，沿着已建立的通道的电子流会遇到正的电子流，正的电子流从地面开始形成新的路径。

Sometimes, however, a stream of electrons following an established channel is met by a positive stream making a new path up from the ground.

来自云层的电子流与正粒子流相遇，而这些正粒子流通常来自于高而尖的结构，如金属旗杆或塔。

The stream of positive particles that meets the surge of electrons from the cloud often arises from a tall pointed structure such as a metal flagpole or a tower.

细菌被安置在石墨纤维制成的阳极上，分解污水中的脂肪、蛋白质和糖类，此过程中产生的稳定的电子流将被直接输入电极。

Bacteria housed on a graphite fiber anode break down the fats, proteins and sugars in sewage, freeing up a steady stream of electrons, which the bacteria transfer directly into the electrode.

用于修饰或说明一科学分支中的概念，其中涉及到自由电子流的运动、发射和性能等，特别是在真空、气体或光电管和特定的导体或半导体中电子的运动。

Pertaining to that branch of science dealing with the motion, emission, and behavior of currents of free electrons, especially in vacuum, gas, or phototubes and special conductors or semiconductors.