direct differentiation meaning in English

直接微分

Isolation , purification and directed differentiation to cartilage cell of bone marrow mesenchymal stem cells by immunomagnetic beads method
免疫磁珠法分离纯化骨髓间充质干细胞及向成软骨细胞分化
Our research work is based on the derivation and cultivation of human embryonic germ cell and mouse embryonic stem cell , and the directed differentiation of mouse embryonic stem cells
本实验也在人类胚胎生殖嵴干细胞、小鼠胚胎干细胞的分离培养，以及小鼠胚胎干细胞的定向分化等方面进行了研究。
Based on the general mathematical models of multibody system dynamics such as the kinematics models of multibody dynamical systems , the ordinary differential equation models and the differential algebraic equation models of dynamics , general forms of the sensitivity equations of the systems are deduced by using direct differentiation method and adjoint variable method
基于通用的多体机械系统运动学数学模型，常微分方程形式的动力学数学模型、微分/代数方程形式的动力学数学模型分别采用直接微分方法、伴随变量方法推导出了系统的状态灵敏度方程的通用形式。对于微分/代数形式的数学模型