Then a vector expression which can compensate the first- and second-order PMD at the same time is derived by using the PMD vector of PMF.

该文首先从理论上导出了保偏光纤的偏振模色散矢量表达式，此表达式是由保偏光纤参数决定的。

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This research intended to construct a eukaryotic expression vector with a site-directed mutation of porcine MSTN propeptide gene.

本研究旨在构建具有猪 MSTN 前肽基因定点突变的真核表达载体。

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An expression that is the sum of a real number and a vector and that contains four terms, one real and three imaginary.

四元数一实数和一矢量的和的表达式，有四个项，一个为实数项，另外三个为虚数项。

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