In every case, then the vector force equals the product of the mass and vector acceleration . 因此在所有情况下，力矢量等于质量和加速度矢量的乘积。
The area of a triangle is equal to half the product of any side and the altitude on that side . 三角形的面积等于任何一边与那边上的高的乘积的一半。
An internal work product will occur when a bar force, n. is associated with a change of length, e . 当杆件内力N和长度的变化e相结合时就得到内乘积功。
Another instance of interest in structural analysis is the equivalence of internal and external work products . 在结构分析中另一个有趣的例子是内外乘积功相等。
It is possible to use kronecker products to overcome some of the snags arising from non-commutativity . 利用克罗内克乘积有可能克服由于不可交换性所产生的某些困难。
The unit of impulse, in any system, equals the product of the units of force and time in that system . 在任一单位制中，冲量的单位等于该单位制中力和时间单位的乘积。
It is sufficient to map each on a circle and then a product of two conformal mappings will do the trick . 只需将每一区域映射到一个圆，然后做两个保形映射的乘积就可达到目的。
The total rate at which recombination is occurring is certainly proportional to the number of electrons times the number of ions . 产生复合的总比率一定正比于电子数和离子数的乘积。
The nine elements of the matrix are products of cosines of angles between the direction of a streamline at a point and the coordinate axis . 这矩阵的9个元素系一点的流线方向和座标轴之间夹角余弦的乘积。
If shear, torsional and axial deformations are to be taken into account, their effects must be added into the expression for internal work . 在计算中若考虑剪切、扭转及轴向变形，则其影响应该迭加到内虚乘积功的表达式中。
