Nominal diameter
[化] 公称直径
🧩 词语组成解析
🗣️ 情景例句
You haven't changed much in fifty years.
你五十年来没有什么变。
The physician said smoking is harmful to my health.
医生说了吸烟对我的健康有害。
Show your tickets，please.
请出示你的票。