| 释义 |
Yanshanian Stage
基本例句
燕山期
The Yanshanian ductile shearing resulted in further enrichment of gold and antimony.燕山期叠加的脆性变形使金锑矿进一步富集。
Yanshanian acid is a mountain of granite, mostly granite and coarse-grained porphyritic granite.山地属燕山期酸性花岗岩，多为粗粒花岗岩和斑状花岗岩。 |