hydrogen makeup补充: replenish; supplement; suppl ...氢: hydrogen补充氢气: make-up hydrogen补充氢气压力: hmake-ugas pressure充氢管: hydrogen tube下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:补充氢,即可在微信中查询翻译