At flat the host is quartz diorite with a finegrained contact phase . 在富来梯，主岩为细粒接触相的石英闪长岩。
2.
The biggest difference between the jdk 1 . x model and the new security architecture of the java 2 platform sdk version 1 . 2 was the introduction of a new configurable security policy , which allowed for finegrained and administrable access control Jdk 1 . x模型和java 2平台sdk版本1 . 2的新安全结构之间的最大区别是引入了新的、可配置的安全策略，这样就可以实现细化的和可管理的访问控制。
