查询词典 sampling

We analyzed the main factors that influence on the quality of reconstruction image. These factors are filter function, projection data, sampling space and noise level in filter backprojection, and the choice of relaxation parameter, the fashion of data access, the choice of basis function and the estimate of optimum iterative times in algebra iterative algorithm.

详细分析了影响滤波反投影算法图像重建质量的基本因素(滤波函数的选取，投影数，抽样间距，噪音的大小)和代数重建算法图像重建质量的几个因素(松弛引子的选择，数据访问方式，基函数的选择，最优迭代次数的估计)。

Couldn't one take a look around and do sampling with a remote-controlled lunar rover?

人能不能简单地借助于一个遥控的月球车来观光呢？

Objective To evaluate the improvement of diagnostic accuracy with background region of interest rectification for 99mTc-DTPA renography in patients with GFR≤30 ml·min-1·（1.73 m2-1, and to compare with plasma clearance of 99mTc-DTPA (GFRp, dual plasma sampling method).

目的 以99mTc-DTPA血浆清除率为标准，评价在重度肾功能不全[GFR≤30 ml·min-1·（1.73 m2-1]患者GFR的评估中，本底矫正在提高99mTc-DTPA肾动态显像检查准确性中的价值。

Article 14 The auditors shall, when selecting samples, fully consider the representability of the samples, and ensure that all the sampling unit in the pool have equal opportunities of selection.

第十四条审计人员选取样本时，应当充分考虑样本的代表性，保证总体中的所有抽样单位具有均等的被选取机会。

Purpose To solve the problem of sampling within household in resident health survey and generate a representative sample.

目的 解决居民健康调查中入户后的抽样问题，产生代表性较好的研究样本。

Comparison between official data and survey data in the Appendix shows high representativeness of sampling.

附录中与官方数据的对比分析可以看出，本次调查具有相当高的代表性。

The preserved species may lack genetic representativity because of poor sampling.

介绍了稀有濒危植物在植物园迁地保护过程中存在的一系列遗传风险。

Inaddition, it gives the linear time re-sampling method to resample the sample set.

最后给出了对样本集进行重采样的线性时间重采样算法。

A nonuniform down sampling method with borderestimation was proposed to resample the input data set according to local feature before reconstruction.

曲面重建前先通过该算法减少参与运算的采样点，表面特征丰富的区域削减的采样点数远小于特征不丰富的区域，再进行曲面重建。

The functions of portable data recorder for adjusting test of safety valves are introduced, the testing data are collected, treated and typed in time, and then the sampling differentiation conditions of safety valve set and reseat pressures are discussed, the optimum programm is determined.

介绍便携式安全阀调整试验用数据记录仪的功能，对试验数据进行实时采集、处理和打印试验记录等，并对安全阀起跳压力和回座压力采样的判别条件进行了讨论，确定了最佳方案。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。