常用的指标包括与键槽齿轮，开槽盘，轴等的碳素钢，铁，或磁性不锈钢制造。
Commonly used targets include gear teeth, slotted discs, shafts with keyways, etc. made of carbon steel, iron, or magnetic stainless steel.
并由三轴试验得出各力学性质指标与龄期和围压的近似定量关系。
Approximate quantitative relations between mechanical index and age and confining pressure are obtained by triaxial compression test.
生长激素(GH)、胰岛素样生长因子i (IGF - I)都是了解GH - IG F轴变化的主要指标。
GH and IGF-I are the main factors to understand the biological action of GH-IGF axis.
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