1. If the roundoff is not 0, the representation is inexact , and V is inexactly representable in the type T. 如果舍入不是0，则表示是不精确的，V在类型T中不能精确表示。
2. Furthermore, the authors develop the proposed alternating direction method as an inexact method, which only needs to solve the subproblem inexactly. 进一步，又提出了一类非精确交替方向法，每步迭代计算只需非精确求解子问题。
3. In our common use of the noise level estimating method, the influence of pixels on the edge has not been considered, which makes the estimated value inexactly. 目前，我们常用的噪音强度估计方法中，没有考虑边缘像素点的影响，使估计值不很准确。
