- built-in breathing system
- 固定式: stationary type; permanent
- 呼吸系统: respiratory system; systema ...
- 无气门式呼吸系统: apneustic respiratory system
- 呼吸系统: air induction system; bibs; breathing system; re iratorysystem; respiration system; systema respiratorium; the respiratory system
- 呼吸系统药: respiratory system drug
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