Read Edit View history 二级头呼吸器 èrjítóuhūxīqì regulator; demand valve Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 二级头呼吸器/ 二級頭呼吸器 èrjítóuhūxīqì regulator; demand valve (scuba diving) second-stage regulator; a device that reduces air pressure to a breathable level upon inhalation Edit Delete References Add reference No references for this word.
二级头呼吸器/ 二級頭呼吸器 èrjítóuhūxīqì regulator; demand valve (scuba diving) second-stage regulator; a device that reduces air pressure to a breathable level upon inhalation Edit Delete