根据不同电流等级及不同触头闭合压力，对银基触头材料裂纹类型及形成机理进行了分析研究。
The study on crack types and their formation mechanisms of silver based contact materials are carried out according to the various currents and various contact closed forces.
结合工程实例检分析了基桩的完整性及缺陷类型，对桩基进行了质量评价。
Then the paper gave living engineering examples analyzed foundation pile completeness and defect type, put forward quality assessment of pile foundation.
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