“vascular bundle sheath”的概念、定义、翻译、参考文献-科学参考

单词	vascular bundle sheath
释义	vascular bundle sheath Encyclopedia 理学〔植物形态与结构〕释 vascular bundle sheath维管束鞘包围在维管束周围的单层至多层紧密排列的细胞。既可能是薄壁组织细胞，也可能是厚壁组织细胞，或者是两类细胞的结合。 Biology vascular bundle sheath维管束鞘
随便看	nonnegative definite kernel nonnegative definite matrix nonnegative definiteness nonnegative definite quadratic estimate 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

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