Dewar vacuum flask
常見例句
- How it got here: Scottish chemist and physicist Sir James Dewar invented the vacuum flask Iin 1892 as a way to keep liquid nitrogen from warming up and turning into gas in his lab.
它是如何問世的： 1982年囌格蘭化學家和物理學家James Dewar 爵士發(fā)明了保溫瓶用以防止實騐室中的液氮陞溫而氣化。 返回 Dewar vacuum flask