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- Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸塵器都是借吸力工作的。
- Gazelles can move with astonishing velocity. 羚羊跑起來(lái)速度驚人。
- Lashing velocity of pump is concerned with nature of air. 泵的抽氣速率與氣體的性質(zhì)有關(guān)。
- His wife's death left him a vacuum in his life. 他妻子的去世使他的生活變得空虛。
- The car was moving at such a velocity! 那輛汽車(chē)的速度簡(jiǎn)直太快了！
- Her husband's death left a vacuum in her life. 她丈夫的死使她的生活變得空虛。
- Some people are living in a vacuum. 有些人過(guò)著(zhù)與世隔絕的生活。
- Gazelles can movewith astonishing velocity. 羚羊跑起來(lái)有時(shí)速度驚人。
- The hare darted off with the velocity of a bird. 野兔像鳥(niǎo)一樣快速掠去。
- A vacuum cleaner is a handy household tool. 吸塵器是一種使用方便的家庭用具。
- The shop repairs vacuum cleaners. 這家店修理吸塵器。
- The porter turned off the vacuum. 清潔工關(guān)掉真空吸塵器。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符號
- The ratio of the velocity of light in a vacuum to that in a medium. 真空中光速通過(guò)中介物的比。
- Sealed under low pressure or a partial vacuum. 抽空密封的在低壓或部分真空狀態(tài)下密封起來(lái)的
- The velocity of light is about 186,000 miles per second. 光速大約是每秒十八萬(wàn)六千英里。
- Dirt and dust are drawn into a vacuum cleaner by suction. 污物和灰塵被吸入吸塵器。
- The rate of change of velocity with respect to time. 加速度速度相對于時(shí)間變化的速率
- We could not pull apart two plates which enclosed a vacuum. 如果兩個(gè)盤(pán)子間是真空，我們就無(wú)法將它們分開(kāi)。
- Operating by means of suction or by maintaining a partial vacuum. 抽真空的用吸取的方式或用維持部分真空的方式來(lái)運作的
