| 释义 |
DEFINITIVE EXAMPLES 权威例句〔gear ratio〕The ratio of the speed of rotation of the powered gear of a gear train to that of the final or driven gear.齿轮速比：齿轮传动系的原动件的转动速度与最末件或从动件的速度之比美国传统〔is placed〕He was placed fifth in last year's race.去年竞速比赛他得了第五名。韦氏高阶〔motion〕The sailor went through all the motions smartly.这个水手装模作样地快速比画了几下。外研社新世纪〔place〕He placed fifth in last year's race.去年竞速比赛他得了第五名。韦氏高阶 |