Formation of powdery stone and its properties are introduced. Parameters for design and construction of cushion are acquired after investigated the mechanical characteristics of powdery stone cushion.
本文介绍了石粉的形成和材料的特性，对石粉垫层的力学特征作了研究，取得了垫层的设计与施工参数。
Tectonic group patterns of coal seam depended on tectonic stress field, mechanical properties of rock of coal-bearing formation and surrounding environments.
煤层的构造组合型式在很大程度上取决于构造应力作用、含煤地层的岩石力学性质和应变环境等。
The complex inclusions in CGHAZ promote the acicular ferrite formation, which is associated with heat input and affects the mechanical properties of CGHAZ.
结果表明：CGHAZ中复合夹杂物可促进针状铁素体的形成，针状铁素体的数量与输入线能量有关并显著影响CGHAZ 的力学性能。
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