基本解释[地球科學]多堦段分離結晶作用英汉例句雙語例句The principle and characteristic of continuous multistage fractional crystallization process are introduced.介紹了連續多級逆流分步結晶過程的原理和特點。multistage fractional crystallization更多例句专业释义地球科學多堦段分離結晶作用