The high frictioncomposite brake block is one of the new technologies applied to both the Heavy - haul Freight Train and the Rapid Freight Train.
高摩合成闸瓦不仅是重载列车配套制动技术之一，也是提速及快运货车配套制动技术之一。
2
The influence of the pile type and the friction angle of the contact surface on the limit bearing capacity of the piles and the composite foundation is discussed with an example.
通过算例，讨论了桩型及桩土接触面上的摩擦角对散体材料桩及其复合地基极限承载力的影响。
3
The ha coating deposited by biomimetic method has lower friction coefficient and better wear resistance compared with the composite coatings.