免费成人A片免费看|亚洲有码视频在线观看|美女毛片视频激情超碰|91精品国产欧美一区二区成人|久久无码精品一级A片一高潮不断|亚洲性爰专区三级片不卡免费|欧洲另类AV无码国产免费看|免费观看黄片视频|三级黄色网片在线|国产精品一区二区三区网址

單詞乎

ground noise

ground noise是什么意思、ground noise怎么讀

ground noise漢語翻譯

【化】 本底噪聲

ground noise英語解釋

名詞 ground noise:

  1. extraneous noise contaminating sound measurements that cannot be separated from the desired signal
    同義詞：background noise

ground noise例句

  1. The engine gave forth a grinding noise, then stopped.
    發(fā)動機(jī)發(fā)出一陣軋軋聲，隨即停了下來。
0
糾錯