可以认出，此表达式正好就是标积。
一个矢量自身相乘的标积等于该矢量大小的平方。
The scalar product of a vector with itself is the square of the magnitude of the vector.
功的定义用到矢量代数的第三种运算，即两个矢量的标积。
The definition of work suggests a third process of vector algebra, namely, scalar multiplication of two vectors.
在适当地选取了半单李代数的根系之后，就可算出初等表示权的标积。
When the set of roots for a semi-simple Lie algebra have been selected appropriately, the scalar product of the weights of the elementary representation can be calculated.
这些讨论表明，活动星系核的短时标光变特征对厚吸积盘模型提供了强有力的支持。
The conclusion is: the short term variability behavior provides a strong support to the thick accretion disk model of AGN.
这些讨论表明，活动星系核的短时标光变特征对厚吸积盘模型提供了强有力的支持。
The conclusion is: the short term variability behavior provides a strong support to the thick accretion disk model of AGN.
应用推荐