查询词典 measure of dispersion

The main purposes of this study are to develop a method to control pollutant dispersion and to measure the control efficiency during the chamber preventative maintenance of a metal etcher.

实验以固定流量的1000 ppm追踪气体SF6在腔底连续释放，以了解反应腔的气罩效率或反应腔上方全开，在侧边视窗孔抽气时对污染物逸散的控制效率。

An experiment is done to measure the dispersion characteristics of the symmetrical mode. The experimental results show good agreement with the theoretical value. In addition, an experimental study of the πline is made.

同时加工制作了作为脊加载环板线一种发展型的π型慢波线，并进行了实验研究，实验证明，π型慢波线是一种宽频带大功率的慢波系统。

The models of each sub variables are established under the individual analysis of the uncertainty caused by the homogeneity of sample, dispersion of measure and the processes such as extraction, purification and instrumental detection etc.

对样品的均匀性、检测分散性及提取、净化、仪器检测等过程引起的不确定度进行了逐层分析，确定了各分量的分布类型，并进行了分步计算和整体合成。

The central contents of this article are as follows: First, subsection discretionary numerical sequence clustering method is advanced to replace previous method for its bad precision, after analyzeing each method of data clustering. Because of the shortcoming of complex in superior partition clustering method, a "choosing maximal distance" model is advanced according to the increment of dispersion measure within a cluster.

本文研究的主要内容如下： 1、分析用于数据分级的各个方法，由于任意数列分级结果的精度较差，提出了分段任意数列分级模型；针对最优分割分级方法计算量大的缺点，提出了以级内离差和的增量最大为依据的最大距离选取模型。

M; x8 d; U* h b where the variance is a measure of the dispersion, or spread, of a set of values about the mean.

偏差是对一系列数值的平均值进行分散，或离散计算。

Methods:To measure abnormal T vector deviation and morphology as well as QT dispersion in 87 patients compared with control group of 50 patients.

87例原发性T环异常患者分为2组，T环方位异常组50例，T环形态异常组37例，50例T环完全正常者作为对照组，对各组进行了心电测量和心向量分析，并比较了各组的QTd。

High concentration white masterbatch is prepared by using different titanium dioxide, PE wax and adding nanocalcium carbonate etc. to change the formulation of masterbatch in this paper. Hiding power, tinctorial power and dispersion performance were tested by color measure instrument and IBAS, and process performance, rheology were tested by Brabender torsion rheometer and INSTRON rheometer.

本文采用不同的钛白粉、聚乙烯蜡及添加纳米碳酸钙等助剂的方法改变浓色母粒的配方，加工制备浓白色母粒，通过测色仪、图像分析仪测试母粒的着色力、遮盖力和分散性能，通过转矩流变仪和INSTRON流变仪研究了母粒的加工性能和静态流变性能。

The dispersion and stability of BaTiO〓 suspensions with tribasic ammonium citrate and ammonium salt of poly as dispersants were investigated respectively by means of sediment experiment and rheology measure, and the optimal dispersion conditions were obtained.

通过沉降实验和流变性测量，研究了分散剂柠檬酸三铵、聚甲基丙烯酸铵分别对BaTiO〓悬浮体的分散和稳定作用，确定了分散剂最佳使用条件。

Stock market reallocates the equity capital though dividend paying and SED , and the dispersion in MBR across firms can be used as a measure of the efficiency of equity capital .

股票市场通过上市公司的分红派现和股权再融资进行股权资金的再分配，上市公司市净率的离散度可以作为度量股权资金配置效率的指标。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。