I saw on the Internet that the new coronavirus has a very long incubation period and is highly contagious, making its spread more hidden and difficult to prevent. Will the new coronavirus go away when
Hello everyone,I recently have a problem with poor contact wires flowing into the production line. Currently, I use the CT-8681 wire tester to test the wires using the short circuit function, but it s
I once answered a question from a netizen: "If an insulating object with a static electricity core moves at high speed, either in a straight line or in a circle, will a magnetic field be formed around
[size=4][color=#000000][backcolor=white] When writing programs in C language, we often encounter such a situation: we want to define a global variable in the header file, and then include it in two di