燃油热水锅炉 · 图解英语单词 · 12 个单词

燃油热水锅炉场景图解英语单词:12个高频词汇(heat exchanger, heating element, aquastat, pressure-relief valve, burner, air tube…)带图标签、真人发音、中英对照,附免费可打印 A4 PDF,点图即可学单词。

Oil-fired water boiler annotated picture vocabulary with labeled objects

本图点读词汇(12)

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