A suitable device was used instead of the original Dewarflask 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。
2
An analysis of the mechanism of heat transfer in Dewarflask 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。
3
A conventional thermos isn't good enough, but a Dewarflask, invented in the 19th century, holds cryogenic fluids like liquid nitrogen at temperatures of -196oc (-321of) for months at a time.