What is the stem of lightning hook?

Stem "lightning hook" may refer to the following two meanings:

1. One is the positive connection of the positive electrode and the negative connection of the negative electrode. The "lightning" here does not refer to the lightning in nature, but refers to a connection mode of electronic components, which can be understood as the pin connection mode of electronic components, that is, one pin is connected to the positive electrode and the other pin is connected to the negative electrode.

2. Another meaning is that there is a stroke called "vertical hook" when writing, which can be understood as "elegance" in Chinese strokes, also called "vertical hook". When typing, if you want to type the word "vertical hook", you can also directly use the "lightning" key instead.

In short, the "lightning hook" may refer to the above two meanings, and the specific meaning needs to be determined according to the context.