矢量

• This construction is often called the parallelogram law of addition of vectors .
  这种作图法常被称为矢量相加的平行四边形法则。
• Polar vectors and axial vectors are distinguished by their inversion properties .
  极矢量与轴矢量的区别在于它们的反演性质不同。
• Use the vector dot product to find the obtuse angle between two diagonals of a cube .
  用矢量点积求立方体的两条对角线所夹的钝角。
• The e-vector makes one complete rotation as the wave advances through one wavelength .
  当波前进了一个波长之后，E矢量转了一整周。
• The scalar product of a vector with itself is the square of the magnitude of the vector .
  一个矢量自身相乘的标积等于该矢量大小的平方。
• Conversely, in many experiments it is possible to measure all the velocity vectors .
  另一方面，在许多实验中，所有的速度矢量都可以测定。
• average velocity is a vector quantity, in the same direction as the vector △s.
  平均速度是矢量，它与矢量s的方向相同。
• Light is a transverse wave and an appreciation of its vectorial nature is of great importance .
  光是横波，对它的矢量本性的了解是非常重要的。
• If the wheel is rotating counterclockwise, its angular-momentum vector is directed eastward .
  如果轮子是逆时针方向旋转，其角动量矢量的方向朝东。
• If the line segment represents a vector, its projections are called the components of the vector .
  如果线段代表一个矢量，其投影就叫做矢量的分量。