词汇	film card
释义	film card filmkɑ:d缩微检索卡片,目录胶片
随便看	Nonne-Froin syndrome nonnegafive matrices nonnegative non negative non-negative nonnegative additive function non-negative characteristic non-negative characteristic form nonnegative combination nonnegative condition non negative condition nonnegative constrained least-squares algorithm nonnegative constrains nonnegative constraint nonnegative curvature nonnegative data nonnegative decomposition nonnegative definite non-negative definite nonnegative definite form nonnegative definite matrices nonnegative definite matrix nonnegative definiteness non-negative definite quadratic estimate nonnegative divisor