水力鼓风 (水力鼓風) shuǐlì gǔfēng

shuǐlì gǔfēng set phrase hydraulic bellows; water-driven ventilation (for metal smelting furnace)
Domain: Modern Chinese 现代汉语 , Subdomain: , Concept:
Notes: (CC-CEDICT '水力鼓風')