英语语法分析

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。

While the mines appear to be close to each other, each exploits a separate porphyry copper deposit.

尽管看起来它们彼此靠得很近，但是每个矿却分别开采不同的含铜斑岩矿床。

The formation of the gold deposits is closely related to the alkali rich porphyry in time and space.

金矿床的形成在时间、空间上与富碱斑岩密切相关。