主要是共享一下，Ajax写的聊天器，通过B/S即可进行聊天-Is mainly about sharing, Ajax chat write device, through the B/S can chat

Concepts Of EMI and EMC Noise is any electrical signal present in a circuit other than the desired signal. This definition excludes the distortion products produced in a circuit due to nonlinearities. Although these distortion products may be undes