英语语法分析

The inner, outside contact zone between Himalayan ultra-epizonal syenite porphyry, Indosinian volcanic rocks of liparite porphyry-dacite series and strata is very advantageous to the metallogenesis.

大面积喜马拉雅期超浅成正长斑岩、印支期流纹斑岩英安岩系列火山岩类与地层的内、外接触带对成矿十分有利。