In the X-Ray angiogram, the precise estimation of vascular centerlines and widths is very important for the quantitative and visualized diagnosis of blood vessel disease.
在血管造影图像中，精确估计血管中心线和宽度是血管疾病量化与可视化诊断的先决条件。
A more precise estimation method of the Zero Doppler Time has been improved, and the frequency synchronization is achieved.
文章改进了零多普勒时间的估计方法，提高了其估计精度，从而较好地实现了频率同步。
A sequential procedure was adopted for the discrimination of these models with the experimental data, and for the precise estimation of the parameters in the optimal models.
运用序贯实验设计方法，用所得的实验数据对这些模型进行筛选，并对所选出的最优模型进行参数精估。
In this paper, applying a certain elementary methods, we obtain a more precise estimation related to the mean modulus of the univalent functions in class S. Thus the old result is improved.
用初等方法得到单叶函数族S中函数平均模数有关的一个较精密估计，改进了现有结果。
Precise estimation of vertical groundwater recharge is important for reasonable estimation and utilization of groundwater resource.
准确计算地下水的垂向入渗补给量是合理评价和利用地下水资源的基础。
Precise estimation of vertical groundwater recharge is important for reasonable estimation and utilization of groundwater resource.
准确计算地下水的垂向入渗补给量是合理评价和利用地下水资源的基础。
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