How to operate the geodetic symbols in MathType editing circuits

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Open the MathType formula editor and enter the formula editing state.

In the editing interface, this is a symbol in the circuit drawing, so there is no need to edit the formula. Click the [Edit] - [Insert Symbol] command in the MathType menu bar with the mouse. .

In the [Insert Symbol] dialog box that pops up, select [Font] in the [View] menu, then select [Songti] in the subsequent font menu, and pull the panel Use the scroll bar to find the symbol representing the earth, click on it and insert it. The two figures in the box in the picture below can both be used as earth symbols, but the three-horizontal symbol is used more often.

Tip: This earth symbol appears more often in household circuits, indicating that it is connected to the earth and that electrical appliances are grounded. This can avoid some safety issues caused by leakage during use.

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