| 释义 |
Definition of dewar in English: dewarnounˈdjuːəˈd(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. 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: dewarnounˈd(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. 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). |