Orificemeter
锐孔流速计, 测流孔
🗣️ 情景例句
The darkest evening of the year.
在这一年中最漆黑的夜晚 。
Please sit down and have a glass of milk.
请坐下来喝一杯牛奶。
I'd like to get this film developed.
我要冲洗这卷胶卷。