Dewar flask 杜瓦瓶 ; 杜瓦真空瓶 ; 真空瓶 ; 杜而瓶
Dewar's flask Dewar Dewar's vessel 杜而器
Dewar vacuum flask 杜瓦期瓶 ; 真空瓶
Thermos Dewar Flask 小型宽口保温桶
Dewar r flask 杜瓦瓶
Laboratory Glass Dewar Flask 实验室玻璃杜瓦瓶
A conventional thermos isn't good enough, but a Dewar flask, invented in the 19th century, holds cryogenic fluids like liquid nitrogen at temperatures of -196oc (-321of) for months at a time.
传统的恒温器不够好，但是19世纪发明的Dewar flask一次能保持像液态氮这样的温度在- 1960华氏摄氏度的低温液体好几个月之久。
A suitable device was used instead of the original Dewar flask in the phosphorescence attachment of the spectrophotometer.
在磷光附件中使用了适当的装置以代替原有的杜瓦氏瓶。
An analysis of the mechanism of heat transfer in Dewar flask is made and shows that heat radiation in given case is not negligible.
本文对杜瓦瓶的传热机制进行了定量分析，指出热辐射传热在杜瓦瓶情形下是不可忽略的。
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