vacuum
n. 真空, 空间, 真空吸尘器 a. 真空的, 产生真空的, 利用真空的 vt. 用吸尘器打扫
发音
词形变化
别名
教材释义与例句
真空；空间；真空吸尘器
用真空吸尘器清扫
释义与例句
-
1.
A region of space that contains no matter.
真空
-
2.
An emptiness in life created by a loss of a person who was close, or of an occupation.
-
3.
An exercise in which one draws their abdomen towards the spine.
-
4.
A spacetime having tensors of zero magnitude.
物理 -
5.
A ground state of a quantum field or of local spacetime, or more abstractly the lowest-energy state of a system.
物理 -
6.
A ground state of a quantum field or of local spacetime, or more abstractly the lowest-energy state of a system.
A description of spacetime resulting from a particular compactification of spatial dimensions.
物理 -
7.
The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, such as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.
a vacuum of 26 inches of mercury, or 13 pounds per square inch
-
8.
Ellipsis of vacuum cleaner.
非正式
-
1.
To use a vacuum cleaner.
吸尘
不及物 -
2.
To optimise a database or database table by physically removing deleted tuples.
及物 计算机 工程 数学 -
3.
To clean (something) with a vacuum cleaner.
及物
词汇关系
同义词 5
上位词 6
下位词 2
部分词 2
同义词 2
上位词 2
相关短语
词源
Borrowed from New Latin vacuum (“vacuum”), a subsense of Classical Latin vacuum (“empty space”), a substantivised form of vacuus (“empty”); related to vacāre (“to be empty”). The exercise sense comes from analogy to the sucking action of a vacuum cleaner.
来源：wiktionary