Yanshan
The Yanshan Hills provide a natural defence for Beijing.
燕山是北京的天然屏障。
—— 给力词典精选Its heat reservoir is composed of Yanshanian granite - porphyry and tuff of Mesozoic.
热储由中生代燕山期花岗斑岩、凝灰岩组成。
—— 给力词典精选Yanshanian strongly peraluminous intrusive rocks occur sporadically in the Hebei - Shanxi - Liaoning area.
燕山期强过铝质侵入岩零星出露于 冀晋 辽地区。
—— 给力词典精选Duhuangling gold deposit occurred within the quartz diorite of Late Yanshan Epoch.
杜荒岭金矿床赋存于燕山晚期的石英闪长(斑)岩中。
—— 给力词典精选The ore bodies are confined to Yanshanian metamorphosed rhyolite porphyry and felsite.
矿体赋存在燕山期变质流纹斑岩、霏细岩中。
—— 给力词典精选