loop around test造句

例句与造句

1. When the second number ( side B ) is called, it produces dead silence, but the party on side A hears the milliwatt test tone drop, and is connected to the person on side B . The purpose of the loop around test is to allow circuit testing to a distant central office without needing a person at the far end.
2. It's difficult to find loop around test in a sentence. 用loop around test造句挺难的