科学家们甚至已经设计了人工开关，当它开启时能够发光和者发出电化学或生物化学信号。
Scientists have even engineered artificial switches to start glowing or giving off some kind of electrochemical or biochemical signal once they are switched "on."
该开关位置决定机床是由计算机控制还是人工控制。
The position of this switch determines whether the machine utilizes the computer or the manual control.
本系列产品无人值守，微电脑全自动控制，自动开机消毒灭菌，自动停机。也可人工控制开关机。
A, this series products are unattended, microcomputer automatic control, automatic starting up of disinfection and sterilization, automatic stop. Also artificial control switch machine.
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