Pre-tr tube
[电] 预-TR管
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
[计] 磁带记录器, 磁道, 磁带驻留, 故障报告
🗣️ 情景例句
He's a Boswell voter.
他是Boswell的支持者。
Where is the telephone office?
电话局在什么地方？
A great many goods were sent to the exhibition from various parts of the world.
大量的商品从世界各地运送到了博览会，