查询词典 sample size

The results show that in both the large- and small-sample conditions, the accelerated stochastic approximation (Kesten, 1958) performs well with medium to large step size.

结果显示，不管在大样本还是小样本情况下，以快速随机接近法（Kesten，1958）使用中到大的梯级表现最佳。

The sample was stratified by farm size (250-499, 500-999, and 1000 or more acres), and telephone follow-up was used to limit non-response bias.

该样本是由农场规模（250-499，500-999，1000亩以上的分层），电话随访用来限制非反应偏差。

If we wish to avoid the inaccuracies caused by the size of the sample , we need to use the T distribution.

为了避免因样本容量大小而造成的误差，我们必须使用T分布。

X-ray diffraction and transmission electron microscopy results indicate that the sample can be indexed to tetragonal ZnMn2O4 and the particle size ranges from 20 to 50 nm.

采用X射线粉末衍射和透射电子显微镜测试技术对样品进行了分析表征，结果表明所合成的催化剂为粒径均匀的纳米粒子，平均粒径在20-50 nm，具有较好的分散性。

An automatic sampling system was applied in SHAOGANG №6 sintering plant,it is made up of bucket type cutter sampler,chemical analysis sample preparation,sinter size analysis and tumbler test etc.

韶钢烧结厂新建的6号烧结机(360 m2)采用了一套自动采制样系统，该系统由采样、化学样制备、粒度分析和转鼓检测等的几个部分构成。

After such treatment the sample is suspended in water by ultrasonics, and the particle size distributions were measured by the laser scattering method.

将经过这样处理后的样品放入水中用超声波分散后，超过50%的金刚石颗粒可以被分散到直径小於50 nm。

The results show that the sample is well dispersed particles with high purity and an average size of about 1 μm. Favorable substances of Ca2 and Sn appear during the cycling of zinc electrode containing CaSn6, Ca2 has continues to react with ZnO to produce calcium zincate, which can highly reduce the dissolvability of anode active materials and greatly improve the cycling performance of zinc electrode. The simulated Ni/Zn battery using CaSn6 and ZnO as the active material of zinc electrode has a high discharge plateau and an excellent cycling ability, and it can retain about 72.6% of initial discharge capacity after 50 charge-discharge cycles.

研究结果表明：通过共沉淀方法合成的CaSn6粒度分布均匀，平均粒径在1 μm左右，并且具有较高的纯度；添加CaSn6的锌负极在循环过程中游离出了Ca2和金属锡等有益物质，并进一步与ZnO反应生成锌酸钙，降低了锌负极活性物质在电解液中的溶解性，从而显著提高了锌电极的循环性能；以CaSn6与ZnO的混合物为负极活性物质的模拟锌镍电池具有较高的放电平台和优良的循环性能，经过50次循环后，电池放电容量保持为起始容量的72.6%。

Of calamity of of postscript Man hairpin is plastic scale next , plastic size is average to mixing sample to burn the impact of rate is the least the cindery amount that issues useless plastic place to arise in high temperature combustion under coal fines .

结果表明：空气流量对燃烧平均速率的影响最为显著，其次是塑料比例，塑料粒度对混合试样燃烧平均速率的影响最小；在高温燃烧下废塑料所产生的灰烬量低于煤粉。

The primary fragmentation reaction of clarain and clum becomes severely with the increase of heating rate and the sample particle size.

在热天平上进行热解破碎研究，并在自制的小型流化床上进行燃烧破碎试验。

After that, the comparison of the fertilizable competences of ICSI and IVF on cryopreservated oocytes was studied in this article, in order to establish an optimized method to improve the fertilizable competences of oocytes up to the level of embryos.1 Effects of the reducing injury methods on IVF of cryopreservated oocytesThe result of the three methods, choosing the right time oocytes, using minimum size sample vitrification and culturing after thawing, showed that these ways could partly maintained the fertilizable competences of cryopreservated bovine oocytes.

减轻损伤方案对冷冻卵母细胞IVF的影响使用选择合适时期的卵母细胞进行冷冻；采用最小样本量玻璃化冷冻方法进行冷冻；在解冻后先孵育再进行体外受精等三种方案能够部分维持或恢复冷冻牛卵母细胞IVF受精能力。

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。