Frictional resistance
[机] 磨擦阻力
🧩 词语组成解析
a. 摩擦的, 由摩擦而生的\\n[机] 磨擦力, 磨擦上的
🗣️ 情景例句
Only a five percent discount? How about twenty percent?
只打九五折？八折怎么样？
He has gone home.
他已经回家去了。
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，