Definition of dewar in English:

dewar

nounˈdjuːəˈd(j)uwər

A double-walled flask of metal or silvered glass with a vacuum between the walls, used to hold liquids at well below ambient temperature.
杜瓦瓶（有双层金属或镀银玻璃内壁的容器，内壁之间为真空，用于盛放远低于环境温度的液体）
Example sentencesExamples
- Liquid helium will boil off constantly through a special porous plug in the dewar to maintain the science probe at its required temperature for up to 18 months.
- But in 1999 the project experienced major development problems when the large thermos bottle, called a dewar, which holds the supercold helium surrounding the instruments, did not cool down as quickly as expected.
- The detector would be placed in a dewar, in effect a huge Thermos bottle.
- However, only the sample dewar was filled with liquid nitrogen.
- The freezing device was composed of the rotating copper or silver disks and the liquid nitrogen dewar.

Origin

Late 19th century: named after Sir James Dewar (see Dewar, Sir James).

Definition of dewar in US English:

dewar

nounˈd(y)o͞owərˈd(j)uwər

A double-walled flask of metal or silvered glass with a vacuum between the walls, used to hold liquids at well below ambient temperature.
杜瓦瓶（有双层金属或镀银玻璃内壁的容器，内壁之间为真空，用于盛放远低于环境温度的液体）
Example sentencesExamples
- But in 1999 the project experienced major development problems when the large thermos bottle, called a dewar, which holds the supercold helium surrounding the instruments, did not cool down as quickly as expected.
- However, only the sample dewar was filled with liquid nitrogen.
- The freezing device was composed of the rotating copper or silver disks and the liquid nitrogen dewar.
- Liquid helium will boil off constantly through a special porous plug in the dewar to maintain the science probe at its required temperature for up to 18 months.
- The detector would be placed in a dewar, in effect a huge Thermos bottle.

Origin

Late 19th century: named after Sir James Dewar (see Dewar, Sir James).

词汇	dewar
释义	Definition of dewar in English: dewar nounˈdjuːəˈd(j)uwər A double-walled flask of metal or silvered glass with a vacuum between the walls, used to hold liquids at well below ambient temperature. 杜瓦瓶（有双层金属或镀银玻璃内壁的容器，内壁之间为真空，用于盛放远低于环境温度的液体） Example sentencesExamples Liquid helium will boil off constantly through a special porous plug in the dewar to maintain the science probe at its required temperature for up to 18 months. But in 1999 the project experienced major development problems when the large thermos bottle, called a dewar, which holds the supercold helium surrounding the instruments, did not cool down as quickly as expected. The detector would be placed in a dewar, in effect a huge Thermos bottle. However, only the sample dewar was filled with liquid nitrogen. The freezing device was composed of the rotating copper or silver disks and the liquid nitrogen dewar. Origin Late 19th century: named after Sir James Dewar (see Dewar, Sir James). Definition of dewar in US English: dewar nounˈd(y)o͞owərˈd(j)uwər A double-walled flask of metal or silvered glass with a vacuum between the walls, used to hold liquids at well below ambient temperature. 杜瓦瓶（有双层金属或镀银玻璃内壁的容器，内壁之间为真空，用于盛放远低于环境温度的液体） Example sentencesExamples But in 1999 the project experienced major development problems when the large thermos bottle, called a dewar, which holds the supercold helium surrounding the instruments, did not cool down as quickly as expected. However, only the sample dewar was filled with liquid nitrogen. The freezing device was composed of the rotating copper or silver disks and the liquid nitrogen dewar. Liquid helium will boil off constantly through a special porous plug in the dewar to maintain the science probe at its required temperature for up to 18 months. The detector would be placed in a dewar, in effect a huge Thermos bottle. Origin Late 19th century: named after Sir James Dewar (see Dewar, Sir James).
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