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年蘇格蘭化學(xué)家和物理學(xué)家James Dewar 爵士發(fā)明了保溫瓶用以防止實(shí)驗(yàn)室中的液氮升溫而氣化。 返回 Dewar vacuum flask