The two principal combustion products are water vapor and carbon dioxide.两种主要的燃烧产物是水蒸气和二氧化碳。City's principal marksman was Joe Harvey who scored seventeen goals.市队的头号射手是打进17粒进球的乔·哈维。Donald King is the principal of Da...
I can't spend ten million dollars priming the pumps on this.我不能花千万美元,这对启动水泵.Yes, we do . And we call it priming paint.是的, 我们称之为车间底漆.Self priming, but can be precoated with suitable paints.单独用底漆, 也可复涂以适合的配套涂层....