Since cannon drum of agile shell-feeding system rotates frequently and intermittently, its motion must be steady. Outline of driving cam determines the motion of cannon drum, so it is necessary to select the proper ou...Since cannon drum of agile shell-feeding system rotates frequently and intermittently, its motion must be steady. Outline of driving cam determines the motion of cannon drum, so it is necessary to select the proper outline of cam. Through analysis of parabolic outline and cycloid outline of the cams, the outline that combines the two curves is obtained. According to the demand of production,the value of the outline is revised, and then the method of fitting curve is used to get the expression of the angle of cam and the displacement of the driven part. Through analyzing the motion of the cannon drum, it is suggested that the angle of the cam is proportion to the displacement of the driven part. The cam with the specially derived outline can move steadily.展开更多
The main technic and economic indices for carbon dioxide emission reduction of Chinese electric power industry are designed systematically in this paper.According to quantitative calculation and influential factor ana...The main technic and economic indices for carbon dioxide emission reduction of Chinese electric power industry are designed systematically in this paper.According to quantitative calculation and influential factor analysis on the carbon dioxide emission reduction of the industry from 1978 to 2009,the author estimates and calculates the relevant indices during the 12 th Five-Year Plan period and in 2020.Finally the author analyzes the relationship and difference between the conventional technical and economic indices for electric power planning and the new index system for the low carbon economy development.展开更多
In this paper, we conduct research on the ability and the employment guiding thinking and the applications on professional basiccourse of higher vocational art and practice of bridging mode. Art design is the biggest ...In this paper, we conduct research on the ability and the employment guiding thinking and the applications on professional basiccourse of higher vocational art and practice of bridging mode. Art design is the biggest characteristic of individual creativity, art need to createinstead of imitating and copying. In the process of production, creative thinking is the key to a successful art products, grasp the technology canproduce the same design and the product, but the hand of art and technology perfect combination is possible to create the art products. For designand production activities in the basic technical indexes and basic operation can understand and grasp the designer is unable to turn the designinto product, higher vocational art and design. This paper integrates the state-of-the-art angles and perspectives on the issues that hold specialmeaning.展开更多
文摘Since cannon drum of agile shell-feeding system rotates frequently and intermittently, its motion must be steady. Outline of driving cam determines the motion of cannon drum, so it is necessary to select the proper outline of cam. Through analysis of parabolic outline and cycloid outline of the cams, the outline that combines the two curves is obtained. According to the demand of production,the value of the outline is revised, and then the method of fitting curve is used to get the expression of the angle of cam and the displacement of the driven part. Through analyzing the motion of the cannon drum, it is suggested that the angle of the cam is proportion to the displacement of the driven part. The cam with the specially derived outline can move steadily.
文摘The main technic and economic indices for carbon dioxide emission reduction of Chinese electric power industry are designed systematically in this paper.According to quantitative calculation and influential factor analysis on the carbon dioxide emission reduction of the industry from 1978 to 2009,the author estimates and calculates the relevant indices during the 12 th Five-Year Plan period and in 2020.Finally the author analyzes the relationship and difference between the conventional technical and economic indices for electric power planning and the new index system for the low carbon economy development.
文摘In this paper, we conduct research on the ability and the employment guiding thinking and the applications on professional basiccourse of higher vocational art and practice of bridging mode. Art design is the biggest characteristic of individual creativity, art need to createinstead of imitating and copying. In the process of production, creative thinking is the key to a successful art products, grasp the technology canproduce the same design and the product, but the hand of art and technology perfect combination is possible to create the art products. For designand production activities in the basic technical indexes and basic operation can understand and grasp the designer is unable to turn the designinto product, higher vocational art and design. This paper integrates the state-of-the-art angles and perspectives on the issues that hold specialmeaning.
