Scfm
abbr. standard cubic foot per minute 标准立方英尺/分钟
🗣️ 情景例句
Who is it?
谁呀
This man risks his life.
这个男人在冒着生命危险。
it is now possible not only to locate a shoal but to tell if it is herring, cod, or other well-known fish, by the pattern of its echo.
不仅能够确定鱼群的位置，而且可以根据鱼群回声的特点分辨出是鲱鱼、鳕鱼，这是人们所熟悉的其他鱼。