基本解释[地球科学]多阶段分离结晶作用英汉例句双语例句The principle and characteristic of continuous multistage fractional crystallization process are introduced.介绍了连续多级逆流分步结晶过程的原理和特点。multistage fractional crystallization更多例句专业释义地球科学多阶段分离结晶作用