vacuum
真空
常用释义
英音[ ˈvækjuːm ]
美音[ ˈvækjuːm ]
变形
复数:
vacuums/vacua
第三人称单数:
vacuums
现在分词:
vacuuming
过去式:
vacuumed
过去分词:
vacuumed
基本释义
- n. 真空，真空容器；真空吸尘器；空白，空虚；（用真空吸尘器所做的）清洁，清扫
- v. 用真空吸尘器打扫
- adj. 利用真空的；真空的；产生真空的
考试频率
四级
考频：近六年出现3次
- n.真空
例句
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1·Vacuum cleaners work by suction.真空吸尘器靠抽吸除尘。来源: 《牛津词典》
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2·The vacuum has an unpleasant smell.这个真空吸尘器有股难闻的气味。来源: 《柯林斯英汉双解大词典》
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3·Exclusion of air creates a vacuum in the bottle.瓶子里的空气排除后就产生真空。来源: 《牛津词典》
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4·The vacuum flask has a strong casing, which won't crack or chip.这个真空瓶有一个坚固的外壳，不会破裂。来源: 《柯林斯英汉双解大词典》
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5·Wind is a current of air caused by a vacuum caused by hot air rising.风是由热空气上升产生真空而引起的空气流动。来源: 《柯林斯英汉双解大词典》
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6·The dust is drawn into the vacuum cleaner.灰尘被吸入了真空吸尘器。
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7·Now we let the volume expand into the vacuum on the other side.现在我们让体积膨胀到另一边的真空中。
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8·Before leaving, Mr. Seymour turned off the vacuum cleaner and the water valve.在离开之前，西摩先生关掉了真空吸尘器和水阀。
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9·It was only when electric motors became advanced that vacuum cleaners became common.只有电动机变得先进时，真空吸尘器才会普遍使用。
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10·The experiment said the gas didn't increase its temperature when it expanded the vacuum.这个实验说明，当气体在向真空膨胀的过程中，其温度没有升高。
网络释义
- vacuum pump : [机]真空泵
- in a vacuum : 似在真空中
- high vacuum : 高度真空，高真空
- vacuum distillation : 真空蒸馏
- vacuum cleaner : 吸尘器；真空吸尘器；真空清洁器
- vacuum system : 真空系统
同义词
n.
[真空]真空；空间；真空吸尘器