Headloss
扬程损失
🗣️ 情景例句
I appreciate it very much.
我非常感激你的帮助。
But we cannot afford to depend on tradition alone.
但是我们不能靠吃老本过日。
it would be more like that of a bluebottle buzzing round the room;
那就像一只嗡嗡叫的绿头苍蝇在屋内飞行的轨迹，