tunnelling

n.隧道效应；开挖隧道

动词tunnel的现在分词形式.

The sensors rely on quantum tunnelling, in which electrons take journeys that would not be allowed by the laws of classical physics, as long as the distances involved are tiny. 这些传感器根据量子隧道效应的原理工作，即只要间隔的距离非常微小，电子就能穿过经典物理学认为不能通过的势垒。