This paper proposes an electro-hydraulic servo control method and realizes the automatic control and remote control of free forging hammers for the first time.A configuration and control strategy for the program-control free forging hammer are Car Visor constructed.Based on the configuration, a single-acting differential servo cylinder system is pr
The polycrystalline cubic boron nitride (PCBN) milling tool can be used in the mold industry to Switch Membrane replace cemented carbide tools to improve machining efficiency and quality.It is necessary to study the tool wear and failure mechanism to increase machining efficiency and extend tool life.Cr12MoV is used to analyze the failure form of P
Genetic and phenotypic parameters considering the genetic effect on hygienic behavior of queen and workers from 40 Africanized honeybees colonies were estimated separately.Maternal origin of queens was controlled whereas the paternal was unknown, and different groups of workers were considered in three seasons, October 2006, April 2007 and August 2
In Hong Kong, the efficacy of ritualized protest has become an issue of hot debate in recent years.Whereas ritualized protest is a long-term political practice in the Hong Kong pro-democracy movement that has considerable influence, skepticism about it has grown remarkably within the radical faction of the Laundry Basket movement.Against this backg