Following the conception of binary medium of structured soils presented by SHEN Zhu-jiang,this paper presents three models of failure of bonding under macro-stress and provides the equation for iterative ca.

Synthesis of block polyether demulsifiers and demulsification rule;

The failure laws of surrounding rocks and over lying bed in the steep special thickness seam mining;

The anti-blasting ability of the protective structure can be greatly enhanced by adopting composite structure with endergonic stratum in it,but the dynamic response and failure law of this composite structure was rarely researched.

Furthermore the wear rule of the isostatic pressing ball decrease,while hand-made ball increase with the wear time.

The oil spectrum data of some kinds diesel engine was analyzed during its life assess period,and the wear rule mathematic model of the main wear elements gradient in the lubricants was established.

The combination structure and the circuitry board are extracted from the equipment to make impact vibration and sweep vibration experiment,and the damage laws of electro-product in vibration environment are analysed in this paper.