Bil
基本脉冲电平（Basis Impulse Level）；基本绝缘电平（Basic Insulation Level ）
🗣️ 情景例句
Wouldn't it be nice if we could skip the examinations
要是我们可以略过考试 那岂不是很好
Please turn in your paper before leaving.
请在离开前将论文交上。
becomes so worn and unreliable that it eventually is not worth mending.
磨损太厉害，老得一点儿也不准了，最终会不值得修理了。