R-fvalue
[化] R-f值; 比移值
🗣️ 情景例句
I'd like to leave a message for him, if you don't mind.
你若不介意的话，我想留话给他。
He said he knew a lot of people there.
他说他在那里认识很多人。
Because the Moon has only an eightieth of the Earth's mass,
因为月球的重量只有地球的1/8，