查询词典 sampling

Using simple random and system sampling methods, we investigated 1205 disabled persons in Beijing.

本研究采取简单随机、等距抽样等方法在北京市抽取了1205名残疾人进行调查。

Using random sampling method to improve the classifier in the non-equilibrium generalization performance on data sets.

使用随机抽样的方法以提高分类器在非平衡数据集上的泛化性能。

Though stratified random sampling method is adopted for the arterial and collector functional systems, there is a good potential to improve it.

尽管分层随机抽样的方法已经在干线和一般的集散系统得到利用，它仍有很大的发展空间。

Survey is also available on the web for input from clubs that were not in the random sampling.

调查也扩及由扶轮社於网上输入资料，这并不包括在随机抽样中。

The reason is simple: most lack the home phone number needed for random sampling.

原因很简单：大多数的人都没有固定电话以供随机抽样。

Methods A total of 3 594 floating people were selected in the questionnaire investigation with random sampling.

采用随机抽样方法，对广东省3 594名育龄流动人口进行问卷调查。

348 Visitors from Hong Kong are involved in a random sampling questionnaire survey on ship before they leave Macau.

本研究通过在澳门返回香港的轮船上以随机抽样调查的方式调查了香港到澳门旅游的游客348人。

The phase difference correction method is presented to measure the parameters of random sampling unbalancing signal.

实验表明结果该方法可以获得较高的测量精度。

A lot of experiments prove that it has relatively high data sampling speed and waveform resolution rata, it provides a new method for the study of the are voltage sudden-changing process.

试验证明该系统具有较高的数据采集速度和波形分辨率，它为电弧电压突变运动过程的深入研究提供了新的分析方法和手段。

At first, this dissertation takes the natural gamma log as an example to put forward the regularized least-squared deconvolution theory, with which not only the effect of the surrounding formation is removed, but al so the effects of the well logging velocity, sampling interval, the ratemeter time constant, the detectorlength and the formation dip-angle are re moved.

首先，本文以自然伽马测井曲线为例，研究了正则化最小乘方反褶积方法。应用该方法，不仅消除围岩对自然伽马曲线读数的影响，而且消除测井速度、测井采样间隔和率表电路时间常数的影响。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。