例句與造句

1. Yes, the current gain in CE mode ( termed hfe ) is usually much greater than unity ( may be as much as 100, 000 or more for very small " supergain " transistors, up to 1000 for small discretes intended for audio premaps ), but it can be significantly less than unity for very high voltage switching power transistors.
2. It's difficult to find switching power transistor in a sentence. 用switching power transistor造句挺難的