抽样

Bone mineral content and bone width at the one-third part of distal radius at non-superiority side were assessed by single-photon absorptiometer, height and body mass were measured at the same time.

调查于2001-10/2002-11在重庆市3所学校（小学、中学和大学各1所）完成，3所学校以班级为抽样单位，选择健康儿童、青少年161名作为调查对象，均在调查前填写知情同意书。

Important guidelines such as sampling level, acceptance criteria and inspection instructions are clearly defined and documented.

重要指引如抽样水平，接收标准和检查说明清析定义并有文件证明。

For any given acceptance sampling plan the probability of accepting or rejecting a lot is easily computed if p is known.

对于任一个给定的验收抽样方案，如果ρ值已知，接受或拒收该批的概率很容易计算出来。

Statistical control of products will be based on attributes, entailing a sampling system ensuring a limit quality corresponding to a probability of acceptance of 5%, with a non-conformity percentage of between 3 and 7%.

产品应依其属性执行统计控制，使抽样系统确保品质差异之接受相当于 5%，不合格比例介于 3%~7%之间。

The scattering coefficients of a single charged sphere are deduced. And with spherical vector wave functions and addition theorem, the scattering coefficients of multiple charged and uncharged spheres are derived. The sampling method of simulating a Gaussian beam in use of MC is provided.

详细推导了单个带电球粒子的散射系数；并采用矢量波函数展开方法结合矢量波函数的加法定理导出了高斯波束入射多个带电/不带电球粒子的散射系数；提出了用MC模拟高斯波束的抽样方法。

Based on Iwao's method, the formula of optimum theortical sampling number was established. By using methods for variance analysis, the number of B. tabaci eggs showed little difference on the upper, middle, and lower canopy of L.

应用Iwao的抽样模型，建立了烟粉虱卵的田间理论抽样数公式方差分析表明，烟粉虱卵在女贞树冠上层、中层、下层的分布数量差异不显著。

Based on Iwao's method, the formula of optimum theortical sampling number was established. By using methods for variance analysis, the number of B. tabaci eggs showed little difference on the upper, middle, and lower canopy of L.

应用Iwao的抽样模型，建立了烟粉虱卵的田间理论抽样数公式方差分析表明，烟粉虱卵在女贞树冠上层、中层、下层的分布数童差异不显著。

A type of probability sample in which aggregations of sampling units, called clusters, are sampled at some stage in the process.

是一种将样本单元聚集在一起的随机抽样法。样本群在抽样的某一步骤被抽出。

We found from experiments that the oversampling Gabor transform can represent image more effectively.

由实验发现，过抽样Gabor变换比临界抽样Gabor变换能更有效的表示图象。

The differences between critical sampling Gabor transform and oversampling Gabor transform are compared.

六、研究和比较了临界抽样Gabor变换和过抽样Gabor变换在图象处理的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。