正定二次型的刻划定理及其程序的英文

characteristic theorem of positive definite quadratic form and its program

• 二次:    secondary; quadrat ...
• 型:    mould; model
• 的:    4次方是 The fourth po ...
• 刻:    carve; engrave; cu ...
• 划定:    delimit; designate
• 理:    texture; grain
• 程序:    procedure