您要查找的是不是：
- pulse turn off time 脉冲断开时间
- circuit commutated turn off time 电路转换断开时间
- Quick, turn off the gas;the milk will boil over. 快把煤气关掉，牛奶要溢了。
- Please turn off the electric power. 请把电源关掉。
- Do you mind if I turn off the light? 我把灯关掉你不反对吗?
- Turn off the lights when you leave. 离开时把灯熄掉。
- Turn off Turn off the computer. It's time for you to have a rest. 关掉电脑,该休息了。
- He turned off the dash light and drove on. 他关掉仪表板上的灯，继续驱车前进。
- Now, it is time to sleep. Let me turn off the lights. 现在,到时间睡觉了。让我关上灯。
- The speaker got off time or two very amusing jokes. 演讲者讲了一两则有趣的笑话。
- Have you turned off the water valve? 你关掉水阀了吗？
- Turn off the switch when anything goes wrong with the machine. 如果机器出故障，就把开关关掉。
- If a water-pipe bursts turn off the stopcock immediately. 水管破裂时要立即关紧旋塞。
- He works as a volunteer at off time. 在业余时间;他从事志愿者工作.
- Is this where we turn off the road for Dalian? 这就是我们要转往大连的路吗？
- Pleas,turn off your TV because we speat too much time on it. 关掉电视吧！因为它占掉我们太多时问了。
- Turn off the TV now. Your brain needs time to relax before bedtime. 现在就把电视关掉。你的脑子在睡觉前需要先放轻松。
- He turned off the light before going out. 他出门前把灯关掉。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
- It also includes, Hall element inputs, a sequencer for commutation control, fixed off time pulse width modulation (PWM) current control and locked rotor protection. 它还包括霍尔元件输入、整流控制定序器、固定停机时间脉冲宽度调制(PWM)电流控制以及锁定转子保护。
