Read Edit View history 瓶胆 píngdǎn thermos liner Origin Definitions Defs Strokes Stroke Words Sentences Sents 瓶胆 瓶膽 píngdǎn thermos liner the vacuum bottle or inner container within the outer case of a thermos, traditionally made of double-walled glass with a silvered surface to maintain temperature Frequency Written text 0.073 per million Cross-References Classifier 只 zhī Sources Frequency data BCC Corpus (BLCU)
瓶胆 瓶膽 píngdǎn thermos liner the vacuum bottle or inner container within the outer case of a thermos, traditionally made of double-walled glass with a silvered surface to maintain temperature Frequency Written text 0.073 per million Cross-References Classifier 只 zhī Sources Frequency data BCC Corpus (BLCU)