第三人称复数：vacuum flasks
名词真空瓶; 保温瓶; 热水瓶; 杜瓦（真空）瓶
1. 真空瓶：vacuum filter 真空过滤器 | vacuum flask 真空瓶 | vacuum forepump 前置真空泵
2. 真空烧瓶：suction pump 真空泵,抽水机 | vacuum flask 真空烧瓶 | wick 灯芯
3. 保温瓶：vacuum feed 真空补水 | vacuum flask 保温瓶 | vacuum freezing vapour compression desalination plant 真空冷冻压汽式除盐装置
4. 冷藏瓶：248. 手电钻 Hand electric drill | 249. 冷藏瓶 Vacuum flask | 250. 电吹风 Electric blower
1. 保温瓶;热水瓶
A vacuum flask is a container which is used to keep hot drinks hot or cold drinks cold. It has two thin silvery glass walls with a vacuum between them.
noun
1. flask with double walls separated by vacuum
used to maintain substances at high or low temperatures
Synonym: vacuum bottle