- 下: below; down; under; undernea ...
- 导轨: guides; track; guide rail; l ...
- 导轨: [机械工程] guides; track; [建筑] guide rail; lead rail; saddle; trackway; bedway; closure rail; guide strip; guide track; guide way; skid; slide guide; sliding way; way of bed
- 下导板: bottom guide
- 下导管: down comer; downcomer pipe; downspout; downtake pipe; overflow pipe
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