• Methods By random sampling method, 9 refectories and 366 students usually having their lunch at schools were drawn from Fangshan District, an anonymous questionnaire survey was conducted among them.

    方法采用随机抽样方法,对房山区9所中小学校食堂366名在校就餐的学生进行膳食及营养教育相关情况的问卷调查

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  • Method Random sampling was used to edible areca-nut sold on market, followed by series of physicochemical and microbiological examination on DB43/132-2004 standard.

    方法采用随机抽样方法,随机抽取市场销售食用槟榔DB43/132-2004中方法进行理化微生物指标的检测。

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  • This paper introduced several methods about the concrete strength inspection: the sampling method given by the present specification; simple random sampling without replacement; stratified sampling.

    具体介绍强度检测抽样几种方法现行规程抽样简单随机抽样法;分层抽样法。

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  • This paper presents a new sampling method, which is called sampling method by allocating random order to percentiles based on some random simulation problems of statistical computation.

    该文针对统计计算中的某些随机模拟问题提出了分位点随机配序抽样

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  • The result showed that the root-mean-square of Phase function fitted by random probability sampling method is smaller.

    结果显示随机概率抽样方法函数与散射相函数间的方均根差更小

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  • At the same time, 49 Yangtse River Delta White Goats were sampled as contrast population from the suburb of Yangzhou city Jiangsu province by the simple random sampling method.

    同时,在江苏省扬州市郊区简单随机抽样49只长江三角洲山羊作为对照群体。结果表明。

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  • Methods: By using questionnaires with multistage stratified random cluster sampling method, 726 valid questionnaires of 800 were backed from the university students in 4 universities in Dalian city.

    对象方法:研究对象采取分层整群随机抽样方法大连市4所高校大一、大四年级学生发放问卷800份,收回有效问卷726份。

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  • In order to compensate the nonlinear errors induced by the rectification for high frequency vibrations in the inertial measure unit (IMU), the paper presents a new random sampling method.

    为了补偿由于惯性敏感元件高频振动整流引起非线性输出误差研究一种新的补偿方法——随机采样

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  • Methods By the random cluster sampling method, 860 students were selected and investigated about AIDS with a questionnaire before and after the education.

    方法采取随机整群抽样方法,在健康教育开展前后抽取860名大学生匿名进行问卷调查

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  • This paper discussed the parameter uncertainties of the LPG leaking processes by means of the random sampling guesswork method.

    采用随机抽样推测处理LPG泄漏爆炸事故风险分析参数不确定性问题

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  • The manufacturing deviation of grids structures was assumed to be in normal distribution, and the normal random sampling was realized by acceptance-rejection method.

    假定网架结构制作偏差近似服从正随机分布利用舍选实现了随机变量的抽样

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  • By using the simple random-sampling method, this paper researches on the influence of the mark plants before the entry point of superhighway's ramp on the responding time of the driver.

    采用简单随机取样研究高速公路匝道入口标志植物驾驶员反应时间影响

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  • The parameter uncertainties of environmental risk analysis of LPG leakage and explosion can be treated by random sampling guesswork method in this paper.

    采用随机抽样推测处理LPG泄漏爆炸事故风险分析参数不确定性问题。

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  • Method: 362 cases of Lizu elderly people who were investigated by a random sampling procedure were interviewed by using MOS SF-36 questionnaire.

    方法采用随机、整群抽样的方法,应用生命质量量表(SF-36健康量表),对五指山市362名黎族老年人进行入户问卷调查。

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  • A hologram memory with high quality and high information storage density for analog information such as characters, lines and portraits has been made by sampling mesh and random phase shifter method.

    采样随机移器实现文字线条、人象多种模拟信息高密度质量全息存贮

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  • Methods: in the communities chosen by stratified cluster random sampling method, we used Geriatric Depression Scale (GDS) to screen about 528 old people to identify the depressed ones.

    方法采用分层整群随机抽样方法抽取社区居委会,老年抑郁量表(GDS)528名社区老年人进行筛查。

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  • Some times the probability of physics background is used to solve the random problem. This method is acquiring the key to the problem by directly sampling of the very problem electronically.

    对于随机性问题有时还可以根据实际物理背景概率法则,电子计算机直接进行抽样试验,从而求得问题的解答。

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  • Methods By using stratified random sampling method 524 college students were selected and surveyed with scales about sense of alienation and subjective well-being.

    方法分层随机抽取某高校524名大学生,采用疏离感主观幸福感量表进行施测。

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  • Methods By using stratified random sampling method 524 college students were selected and surveyed with scales about sense of alienation and subjective well-being.

    方法分层随机抽取某高校524名大学生,采用疏离感主观幸福感量表进行施测。

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