I would like to learn more knowledge of computer networks, such as switches, routers in this area. I want to see what kind of books?
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All details such as switches, dimmers and outlet are in stainless steel.
所有的细节,如开关,调光器和出口不锈钢。
Many low resistance measurements are made on devices such as switches, connectors, and relay contacts.
很多低电阻测量是在诸如开关、连接器和继电器接点等器件上进行的。
Input ports cannot be controlled in the NVR system. They are connected to physical input devices such as switches, sensors... etc.
输入埠在NVR系统之中无法控制,是因为他必须由所连接之装置或电路加以控制,例如开关、感应器等等。
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