硫、铅同位素和锇同位素初始比值显示，成矿物质主要来自含矿侵入岩体，但是也有其它来源。
Sulfur and lead isotopic features and initial OS values suggest that the ore-forming materials were mainly derived from the host quartz diorite and granodiorite.
以膜单元的设计厚度与初始厚度的比值为设计变量，通过设计变量的量纲一化实现了设计变量的连接。
With the ratios of design thickness to initial thickness of membrane elements as design variables, design variables linking is implemented by dimensionless design variables.
针对波阻抗方向继电器利用初始电压和电流行波的比值构成的特点，提出了基于小波变换的继电器算法。
According to the property that the surge impedance relay is realized by the ratio of voltage and current travelling waves, the relay's algorithm based on wavelets is present.
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