是麻粒岩相变质作用发生于地壳大幅度增厚的环境，强烈的构造变动和区域性高热流共同作用的结果。
The above shows that granulite facies metamorphism occurred in the crust of (increasing) thickness and caused by strong tectonic disturbance and regional high heat flow.
稀土变质处理可降低铸态韧性，增加硬度，同时提高热处理后的韧性及硬度。
RE modification treatment decreased as-cast impact toughness and increased hardness, at the some time, improved both the impact toughness and hardness in heat-treatment state.
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