1)  infinitely small
无限小
2)  infinity decimal
无限小数
3)  infinitely small element
无限小元
4)  semi-infinitesimal
半无限小
5)  infinitesimal
无限小（量）
6)  infinitesimal transformation
无限小变换
1.
In this paper, by means of infinitesimal transformation, vector product is converted into matrix calculus as introducing accompaniment matrix formulation of vector, which gives the transformation expression of bisector product, finally we obtain the method of inertia tensor matrix.
通过无限小变换,把向量叉乘转换为矩阵运算,在引入向量的相伴矩阵的基础上,给出二重向量叉乘的转换法。
2.
The varied form under the infinitesimal transformations is given and the generalized Noether identity and the form of conserved quantity are obtained .
建立d’Alembert Lagrange原理的Poincar Chetaev形式 ,给出原理在无限小变换下的变形形式 ,由此得到广义Noether等式以及守恒量的形式 。
3.
By introducing an infinitesimal generator for the relativistic Birkhoff system and based on the invariance of the differentiation variation principle under the infinitesimal transformations,the Noether theorem and Noether inverse theorem of the relativistic Birkhoff system are obtained.
定义相对论Birkhoff系统的无限小变换生成元 ,根据在无限小变换下微分变分原理的不变性 ,得到相对论Birkhoff系统的Noether定理和Noether逆定理 。
参考词条
补充资料：无限小
1.见"无穷小"。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。