抽样

Sample was used and this is a study lim itation.

方 的抽样方式进﹐这是研究当中的局限。

Six field study sites including Limu Mountain, Jianfengling Mountain, Bawangling Mountain, Nanmao Mountain, Ewanling Mountain and upper researches of Wenjiao River were investigated by regular sampling and cage trapping.

对18个市县的103个乡镇进行了走访调查；野外调查中采用系统抽样法和笼捕法，对黎母山、尖峰岭、霸王岭、南茂岭、万俄岭和文教河上游6个研究点进行了调查。

Methods HLA-A locus was typed with polymerase chain reaction-sequence specific primer technique for 259 longevous people (aged 90～105) and 214 healthy,randomly sampled subjects (aged 23～70) who live in the same area and comparative analyses were carried out among relevant alleles between the two groups.

方法应用聚合酶链式反应-序列特异引物对广西巴马和东兰两县259名90岁以上壮族长寿老人(90~105岁)和214名当地健康、随机抽样的壮族成年人(23~70岁)进行HLA-A座位的基因分型并进行相应等位基因频率比较。

The theory of multirate digital signal processing and its applications.

多抽样率数字信号处理理论及其应用。

Multirate filter banks and wavelet transform are closely related theoretically and practically.

多抽样率滤波器组理论和离散时间序列的小波变换有着密切关系。

Units, e.g. new towns, are not necessar ily identical with

会分区细小的地区，如新市镇的抽样估

Units, e.g. new towns, are not necessar ily identical with

会分区细小的地区，例如新市镇的抽样估

Since the melamine crisis started, 2651 production batches of Dumex products dating back to April 2007 underwent sample newing by certified official laboratories. Results from these tests prove that Dumex products do not contain melamine and fully comply with China's national standard.

自三聚氰胺事件开始以来，官方认证的实验室抽样检验了多美滋自2007年4月以来共计2651批次的产品及保留样品，检验结果均证明了产品不含三聚氰胺，完全符合国家的有关标准。

However, in the simulation, we found that the equilibrium between growing radicals and nitroxyl radicals was a CPU-intensive and time-consuming process, therefore, a hybrid algorithm with an analytical expression for the exchange equilibrium and with a biased sampling technique for those elementary reactions of small probabilities was used to improve the stochastic algorithm.

并发现，链自由基与氮氧游离基之间的偶合-解离平衡消耗大量的运算时间，为此用偏倚抽样法和杂化运算对模拟进行了改进，得到了与原始方法基本一致的结果，从而大大缩短了运算时间。

Firstly, the key frames were extracted from the video sequence. Then, the features detected between adjacent key frames were guided and matched by motion displacement, which was calculated by the optical flow field. With the RANSAC robust estimation and cascade of homography matrix, the homography matrix of the adjacent key frame and the nonadjacent key frame was got. Finally, the seamless mosaic was rendered by image blending.

首先在同一镜头下的视频序列中提取若干关键帧，利用关键帧拼接表示序列的拼接；其次利用光流场算法计算出的运动位移量引导相邻关键帧间特征点的匹配，并结合随机抽样一致性鲁棒估计算法和单映矩阵的级联性，得到相邻关键帧、非相邻关键帧间的对应矩阵；最后通过融合实现了序列的无缝拼接。

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。