I gazed painfully upon the luminous current growing weaker and weaker in the wire coil.

我痛苦地看着线圈中的光电流越来越弱。

In the handheld scanner, a small wire coil creates an oscillating magnetic field, which makes the glass sliver in the sticker vibrate in sympathy.

而在手持扫描仪内部的小线圈创建的一个振荡磁场使得在贴纸内的玻璃棉条同时产生震动。