Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
欠阻尼RLC电路， L = 1 H， R = 2 Omega 。振荡幅度下降到一半需要多长时间？
欠阻尼RLC电路， L = 1 H， R = 2 Omega 。振荡幅度下降到一半需要多长时间？
Natural Language
Math Input
Extended Keyboard
