查询词典 sample size

Meibom and his colleagues based their study on two rare meteorite specimens - HH 237, a grapefruit-size chondrite recovered from the Hammadah al Hamra region of north Africa; and QUE 94411, a walnut-size sample collected from the Queen Alexander mountain range in Antarctica.

梅波姆和他的同事将理论建立在对二颗稀有陨星标本的研究基础上。这二颗陨星一颗是

The the probabilistic forecasting method of the error between the sample mean and expectation value of the random variable utilizing the central limit theory was researched, then the mathematical formula for the relation between sampling size and variance coefficient of loss of load probability was analyzed. Furthermore, the formulas for the relation between confidence intervals of variance coefficient and sampling size are deduced.

基于中心极限定理深入研究随机变量的样本均值与期望值之间误差的概率预测方法，在此基础上分析失负荷概率(loss of load probability，LOLP)指标的方差系数和样本容量之间的关系表达式，导出方差系数给定时的样本容量置信区间公式及样本容量给定时的方差系数置信区间公式。

It is shown that efficiency of the cylindric sample with a size of Φ12m×3cm is the highest, which is about 20% higher than that for general cylindric samples with a size of Φ7.5cm×7.5cm.

这些成果都为我们的探测工作带来十分有益的促进作用。

The microcrystalline strengthening effect is obvious, due to the sample with fine grain size that was wintered at low temperature and owned good bending strength. At the same time, also due to fine grain sizes, only less tetragonal zirconia grain that their sizes exceeded critical phase transformation size and could change into monoclinal phase when suffering stress, indistinct effect of transformation toughening operated, hence lower fracture toughness was obtained.

由于其晶粒尺寸较小，细晶强化的效果非常明显，因此，材料具有较高的抗弯强度；同时，由于晶粒小，只有一部分晶粒可以达到临界相变尺寸，相变增韧的效果不明显，因此试样的断裂韧性较低。

Based on all the researches available, this paper simulates a more general ARIMA(0,1,q) process and analyzes the influence of lag length selection criterions to the size and power of the ADF test with different data generating processes, ADF regressions, and sample sizes. Finally, it is proved that the Modified Information Criteria always shows a more proper size and the General to Special Criteria has more robust properties in ADF test.

本文在已有研究的基础上，模拟了更为般的ARIMA(0，1，q)过程，分析了在不同的数据生成过程、检验式以及样本容量下，各种滞后长度选择方法对ADF检验功效和实际检验水平的影响，最后以为修正的信息准则通常具有较合理的实际检验水平，而从般到特殊法具有更为稳健的ADF检验性质。

In so doing, we expected to obtain the information regarding particle size and size distribution of AuNPs directly from the electrophoresis results. In this experiment we used 10mM Sodium tetraborate and 10mM Sodium phosphate containing 200mM Sodium dodecyl sulfate as electrophoretic run buffers (pH 8.8), and AuNP Standards were treated with the synthesized compound hexyl-oligo(p-phenyleneethyny-lene)-poly as the sample and separated by CE.

根据电泳最佳条件的实验结果，我们采用10mM Sodium tetraborate与10mM Sodium phosphate并添加200mM Sodium dodecyl sulfate作为缓冲溶液（pH 8.8），以经实验室合成的界面活性剂（hexyl-oligo (p-phenyleneethyny-lene)-poly，Hex-OPE-PEO）修饰过后的金奈米粒子标准品作为样品进行电泳实验，将所测得的电泳迁移率与标准品颗粒大小做一校正曲线，可以得到最佳的电泳迁移率－粒径大小之线性关系（R2＞0.99）。

There were lesser and fewer in commercial species and its numbers in the cover net, and the sum of Nemipterus virgatus , Saurida tumbil , Upeneus bensasi , Trachinocephalus myops comprised 95.4% in number and 86.0% in weight of sample catch in the cover net,respectively. The high percentage of juvenile commercial species that were undersized in the codend showed 30.3 mm square mesh codend had more serious damage to most juvenile commercial species, approaching or exceeding 50% in percentage of juvenile species which body length is smaller than fishable size- Trichiurus haumela, Priacanthus tayenus , Navodon tessellatus, Argyrosomus argentatus, Nemipterus bathybius and so on, even exceeding 90% in percentage of juvenile Sepia spp, Loligo spp and Parastromateus niger. In particular, 50% selection lengths ( L 0.5) caught Saurida tumbil and Nemipterus virgatus were smaller than their minimum fishable size.

结果表明，这种规格的方目网囊平均尾数逃逸率为29.76%，平均重量逃逸率为8.46%；出现在套网中的经济种类少、数量少，条尾绯鲤、金线鱼、多齿蛇鲻、大头狗母鱼4种鱼的尾数和重量分别占套网抽样渔获的95.4%和86.0%；网囊中带鱼、长尾大眼鲷、黄鳍马面鲀、白姑鱼、深水金线鱼等鱼种的体长小于可捕标准的个体尾数比例均超过或接近50%，枪乌贼、乌贼、乌鲳等幼鱼尾数比例达90%以上，多齿蛇鲻和金线鱼50%选择体长均未达到最低可捕标准，表明该种规格网囊对多数经济种类幼体的损害比较严重。

Ca2 was activated by microwave to investigate its physical characteristics and dechloriantion.The change of total pore area,pore area of different pore size zone,pore size distribution of the sample before and after reaction of different microwave activation was examined by mercury porosimeter.

采用微波炉对一定质量的氢氧化钙样品进行活化，利用压汞仪考察了不同微波活化时间及脱氯反应前后的Ca2总比孔表面积、分段比表面积和孔径分布的变化，并在脱氯实验台上对脱氯效率进行实际测试。

Acording to the results for the analysis of component and structure of titanic iron ore with X-ray diffractometer and the fact in that titanic iron ore is prossessed of a dielectric property capable to absorb evidently microwave, a household microwave oven with power of 800W is applied to the decomposition of titanic iron ore sample under atmospheric pressure. It is shows that the sample with size of below 0.125nm can completely decomposed with phosphoric acid or mixture of phosphoric acid and sulfuric at about 160℃(corresponding to mid-low fire gear in microwave oven).

本实验根据X-射线衍射仪分析钛铁矿组成和结构的结果，利用钛铁矿显著吸收微波的介电特性，使用改装后的800W家用微波炉，在常压下选择中低火加热温度（160℃左右），分别用磷酸和磷硫混酸在微波辐照下消解粒度小于0.125mm的矿样，可快速将矿样消解完全。

Firstly, the size of sample of sound model is very large,making it impossible to put the sample into bland card.

首先， 语音模组的样品体积非常大，导致不能直接装入空白卡片。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。