“library services for the Elderly”的概念、定义、翻译、参考文献-科学参考

单词	library services for the Elderly
释义	library services for the Elderly Encyclopedia 管理学图书馆老年人服务释 library services for the Elderly图书馆老年人服务图书馆针对老年人的生理和心理特征展开的以满足老年人信息需求为目的的服务。
随便看	non-negative definite quadratic estimator nonnegative divisor nonnegative element nonnegative function nonnegative integer nonnegative integral kernel nonnegative manifold nonnegative matrix non-negative matrix factorization nonnegative measure nonnegative number nonnegative operator nonnegative orthant nonnegative partial sum nonnegative quadratic form nonnegative semi-definite matrix nonnegative solution nonnegative splitting nonnegativity nonnegativity condition nonnegativity requirement non nesting matching non-nesting matching nonnesting matching non nesting partition

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