Sentron
防阴极回轰式磁控管(短波电子管), 防阴极反加热式磁控管A-type sentron A型仙台放电管
🗣️ 情景例句
Good afternoon, Mrs. Green. I'd like you to meet my girlfriend, Sally.
格林太太，下午好。我想让你认识一下我的女朋友萨里。
The doctor said I looked pale and tired.
医生说我看起来苍白和疲倦。
But as the paper moved from side to side under the pen point,
由于纸在笔尖下来回运动，