Concrete, reinforced and prestressed concrete structures - Part 2: Concrete - Specification, properties, production and conformity - Application rules for DIN EN 206-1— 62 стр.
Calculation of load capacity of spur, helical and bevel gears; pinion single tooth contact factor Z<(Index)B>, wheel single tooth contact factor Z<(Index)D>, transverse contact ratio <epsilon><Index alpha>— 4 стр.