lower contact
3.The use of two new processes can refine the austenite grain size number to ASTM 11,the carbide grain size to 0.4μ; it can also make the hardness of the piece of work lower than HB270. Therefore, the contact-fatigue life can be increased by 100 per cent.
8.The Lower Carboniferous strata outcropped in the most of Tianshan mountains in China, and most of them are in contact with underlying strata by unconformability of dip, such as Dahalaijunshan Formation in west, which belongs to north Tianshan tectonics, Maanqiao Formation in middle, which belongs to middle Tianshan tectonics, Gancaohu Formation in east, which belongs to south Tianshan tectonics and so on.
9.In view of the problems that a lot of difficulties are founded in operating the wastewater treatment equipments of service area in express highway when the real quantities are much lower than the designed ones, a feasibility test is done to find a economical mode when the Biological Contact Oxidation Process (BCO) is used in the service area of express highway.
10.Back hillside of workshop at Xiaoshan hydraulic power plant has its geologic structure as fellows: the lower part is andesite (α J 2 ), and the basalt (β N-Q ) covers on it. There is an unconformable contact face between the two layers, the face is interspersed with 1.00￣7.00 m thick debris soil, occurrence of the face points to the workshop, dip angle is 10°～35°.
