- sucker door
- 供气: air feed; air supply
- 门: entrance; exit; door; gate
- 调节供气门: supply register
- 供气: air feed; air supply◇供气泵 air feed pump; 供气管道 gas supply line; air line
- 气门: [机械工程] air door; air valve of a tyre; [动物学] spiracle; stigma; stoma◇气门芯[心] valve inside; 气门柱 stylotrachealis
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