According to several conditions when power is fed inversely in power source switching to dual power sources users,this paper describes and analyzes technically the practical solutions to three different switching modes,including electric switching with power off,electric switching with power on and manual switching with power on.
针对高压双电源用户在电级切换时出现倒送电的几种情况,从技术角度上,就停电电动切换、不停电电动切换、不停电手动切换三种切换方式下采取的具体措施,进行了阐述和分析。
Turn the power off, if the power of the camera is on.
（关闭电源，如果相机的电源是打开的。
Turn off TVs and stereos instead of switching them to standby.
电视、响不用时应关闭电源，不宜待机。
Shut off the electric power whenever the water supply is turned off.
如果供水中断,必须立即关闭电源。
If you don't turn the electricity off, it will waste while you are out.
如果你外出时不关闭电源，那电就会白白浪费掉。
Switch to choose reading lamp, flash alarm or turn off.
推动开关可选择开启闪灯报警或书灯、关闭电源。
With a switch, you can turn electricity on or off easily.
有了开关，你就可以很容易地接通或关闭电源。
"Before any work is done on the heater, disconnect all power to the heater by opening the switch at the main electrical circuit breaker of fuse box."
在调节温度控制器的温度设置之前,请首先关闭电源开关,切断电源。
Inspect the whole warehouse, turn off the electric power and lock the warehouse door when off duty.
下班时要检查库房有无隐患，关闭电源，锁好库门。
"Shut off the electric power supply to heater, close cold water inlet, open a hot water faucet to allow air to enter the system and open the drain valve, which is threaded to receive a standard hose coupling."
首先关闭电源开关,关闭冷水进口阀门,打开热水水龙头让空气进入管道系统,并且打开排水阀。
"Shutdown the PC, disconnect the power cord"
关闭电脑电源并且断开电源线。
Allow the computer to turn off this device to save power.
允许计算机关闭此设备以节约电源。
Double Closed-loop Controlled Stabilized Current Switching Power Supply Based on UC3875
基于UC3875的双闭环控制稳流型开关电源
First close the high-pressure pump, cut off the power supply of main device, and stop the operation of RO device.
首先关闭高压泵，切断主机电源，关闭RO设备的运行。
On battery power, turn off device if idle for
使用电池电源时，空闲此段时间后关闭设备
Press the power switch at the top of the flashlight to light on the LED indicator. Press again to switch off .
按下电筒头部电源开关,LED灯源点亮,再按一下即可关闭.
The product has to restors its original situation after power off/ on.
在电源开启和关闭后，样机能够恢复到最初条件。
On external power, turn off device if idle for
使用外部电源时，空闲此段时间后关闭设备
Close the drain valve and refill the tank, and restore power.
关闭排污阀，重新向内胆注水，重新恢复电源。
