positive definite function [数] 正定函数
negative definite function [数] 负定函数
quadratic positive - definite function 二次正定函数
Irreducible positive definite function 不可分解正定函数
definite integral involving Bessel function 含贝塞尔函数的定积分
positive definite kernel function 正定核
positive definite bilinear function 正定双线性函数
positive definite rational function 正定有理函数
This pattern makes the structure clear and every division has its definite function.
这种设计模式使系统结构层次清晰，各部分模块划分明确。
The water bed not only enables users to sleep comfortably, but also has a definite function of medical care.
该水床不但睡着舒适，而且具有一定的医疗保健作用。
Deformation and failure of slope is a complicated process. A definite function to predict deformation of slope is not available due to many influencing factors and undefined feature.
边坡变形与破坏是一个复杂的过程，其影响因素众多、且具有不确定性，一般很难用确定的函数式来预测。
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