梯度

• Prism wheel : ladder , column , 4 arris , comet prism
  四棱镜，梯度镜,柱面镜，斜面镜，白光
• Artificial ant colony based on grayscale grads
  灰度梯度感知人工蚁群的数字图像边缘检测
• The convergence for a class of conjugate gradient methods
  一族共轭梯度算法的全局收敛性
• Research progress in gradient polymer materials
  高分子梯度材料的研究现状
• A conjugate gradient method based on subset of subspace
  基于子空间子集最优的共轭梯度法
• E - pcr with dgge approach for indentifying subclass genes
  加变性梯度凝胶电泳鉴别未知基因
• On gradient propulsion of the rural social security system
  论农村社会保障制度的梯度推进