關(guān)于HFSS變量的問題，高手們指點下，謝謝了

網(wǎng)友回復(fù):

圖估計打開比較困難……下面是具體英文： 
cannot delete varible h. 
-it may be used by other varibles or expressions in the current design(s). 
-it also may be used in objects that are part of the undo database,which will be cleared when the project is saved.

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