The forming of the intersection curve and surface of the rectangular section double focus dissymmetric shoulder of packaging machines was analyzed and the mathematical models of shoulder of curve of surface and its edge were established.
研究了矩形管双焦点不对称翻领成型器领口交接曲线和曲面的形成,建立了矩形管双焦点不对称翻领成型器的肩曲面及其边界曲线的数学模型,给出了其高度与其它参数的关系式,为矩形管双焦点不对称翻领成型器的CAD/CAM提供了数学理论依据。
Temperature and stress fields of multi-pass welding of orthogonal nozzles were simulated.
对正交接管焊接接头的温度场和应力场进行了数值模拟。
The results indicated that the grade quality of stock-tobacco in a corporation governed the qualification rate of the leaf grade of the industry-commerce deal,although there was significant difference of the tobacco grade quality among various enterprises.
本文根据全国烟叶工商交接等级质量监督检查资料对商业备货烟叶等级质量问题进行了分析。