vacuum
音标发音
- 英式音标 [ˈvæk.juːm]
- 美式音标 [ˈvæk.juːm]
- 国际音标 ['vækjuəm]
- 英式发音
- 美式发音
基本解释
- n. 真空；空间；真空吸尘器
- adj. 真空的；利用真空的；产生真空的
- vt. 用真空吸尘器清扫
词源解说
- 直接源自拉丁语的vacuum，意为空着的地方。
词根记忆
- vacu(空) + um→真空
- vac(空) + uum→真空
- vac(空的) + uum→真空
- vacu(=vac空) + um→真空
同根派生
用法辨析
- 在科技用语中vaccum的复数形式是 vacua。
n. (名词)
英汉例句
- Sound waves cannot travel through a vacuum.
声波不能在真空中传播。
用作名词 (n.)
词组短语
- fill a vacuum 填补真空
- produce 〔create, cause〕 a vacuum 产生〔制造〕真空
- low 〔rough〕 vacuum 低真空
- fine 〔high, perfect〕 vacuum 高真空
- vacuum tube 真空管；电子管
- vacuum permeability 真空磁导率
- vacuum pumps 水力喷射器;真空帮浦;真空泵;水动力喷洒器
用作名词 (n.)
动词+～
形容词+～
短语
英英字典
- (EMPTY SPACE) a space from which most or all of the matter has been removed, or where there is little or no matter
- (CLEANER) a vacuum cleaner
- to use a vacuum cleaner to collect dust, dirt, etc.
- If someone or something creates a vacuum, they leave a place or position that then needs to be filled by another person or thing.
- If something is done in a vacuum, it is not affected by any outside influences or information.
- A vacuum is a space that contains no air or other gas.
- A vacuum is the same as a .
- If you vacuum something, you clean it using a vacuum cleaner.
剑桥英英字典
柯林斯英英字典
专业释义
- 真空吸尘器
- 真空
- 真空
- 真空
- 真空
- 真空
- 真空