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The modified double weight function method is to introduce new weight functions doing subtraction between two negative exponential-type functions. For a Pearson type three probability distribution, the MDWF is able to make estimations of the Standard Deviation and Coefficient of Skewness C(subscript S from the second-order weighted central moments reduced to the first-order weighted central moment estimations.

修改的双权函数法是将两个负指数型函数之差所构成的函数类取作权函数,对于皮尔逊Ⅲ型分布,它能使σ和Cs的估计由原权函数法的二阶加权中心矩降低为一阶加权中心矩估计。

From two-dimensional contour map,continuous "band" segregation of sulfur and non-continuous "band" segregation of phosphorus in center of cross section were o...

从大梁钢坯横截面整体的原位统计分布二维成分等高图可以直观的看出,在连铸坯横截面上中心部位,硫形成一条较连续的"带状"偏析,磷形成一条不连续的"带状"偏析,其它元素中心"带状"偏析不明显。

The results show that the total acid amount changed indistinctively and strong acid sites increased relatively if the treated temperature was not higher than 400 ℃ even in two different treated media. However, the total acid amount decreased obviously and strong acid sites nearly disappeared as the treated temperature was beyond 500 ℃, and the second pore with different pore sizes formed and average pore diameter enlarged of MCM-22 zeolite catalysts after hydrothermal treatment.

研究结果表明,在两种不同介质中和处理温度不高于400 ℃条件下,催化剂的总酸量变化不大,强酸中心有所增加;处理温度高于500 ℃后,催化剂的总酸量明显下降,强酸中心基本消失;经水热处理后, MCM-22分子筛催化剂中形成了孔径不均匀的二次孔,平均孔径增大。

The center will op-erate based on market economic mechanism;give full play to High-Tec enterprise's guiding role to promote the eco-nomic development and social progress both Heilongjiang province and ocher part of China.

焊接材料及产品检验等二十多个实验室,为中心提供全方位的技术服务。该中心按市场经济机制运行,充分发挥高新技术企业的先导作用,为黑龙江省及全国各地的经济发展和社会进步服务。

The Monte Carlo simulation shows that the present method is better than the Method of Moment in unbiasedness, and is generally comparable to MOM in efficiency.

对P-Ⅲ型总体分布,本文提出的权函数能使σ和Cs的估计由原方法的二阶加权中心矩降低为一阶加权中心矩估计。

The survey and statistic results of factors that affect community centers'' using according to physical and unphysical environment factors reveals: in the part of phy-sical factors have location and roads forward; another part have mothers'' classroom set, administrator provide, and the members of community asso-ciation.

在影响社区活动中心使用因素上,本研究依实质环境因素与非实质环境因素(共九类22个变数),经由调查与统计结果发现:在实质环境因素部份,影响社区活动中心使用情形的因素有:区位分布与面临道路数等二个变数;非实质因素部份则为:妈妈教室的设置、管理员的设置、以及社区发展协会会员数等三个变数。

Setting up city track transportation system is the way to solve the traffic in the cities, and to realize substanable development. There have tow reasons: first, city track transportation has many merits, great capability, quick speed, safety on time, low cost, saving energy, catabatic traffic block on the ground, protecting the environment and so on; second, though track transportation, the develop derection of city constructure turns from single-center homocentric cirlarity mode to multi-center axes mode.

修建城市轨道交通是解决当前大城市交通问题、实现可持续发展的有效手段,其表现有二:第一,城市轨道交通具有运能大、速度快、安全准时、成本低、节约能源、能缓解地面交通拥挤和有利于环境保护等优点;第二,城市轨道交通的修建使城市结构的发展方向从单中心同心圆结构转向多中心轴线式结构。

The value of the primary intension for a given centered world as argument is defined to be the same as the value of the two-dimensional intension for the pair of arguments consisting of the centered world and the same world, uncentered.

对以一个给定的中心世界为自变量的基础内涵来说,其值被定义为和'二维内涵(——取两个自变量,中心世界和同一个世界)具有相同的值'。

The thinking mode of witch had two traits: one is thinking by image, the other is analogizing the construction of the whole world round the center of human.

巫术思维方式的特点有二,一是以形象来思维,二是以人为中心来类推整个世界的结构。

In very short and several years, company at conducting management,the mechanism innovation,economic performanceses to all obtain can pleased result, get the approbation of the all levels leadership, two 00 five years December 30th, the GPS product passes a national security to guard against to report to the police the system product quality direct examination center,public security official's department safety guards against to report to the police the system product quality direct examination test center,safety in Shanghai City to guard against the product quality direct examination department of examination report.

在短短的几年中,公司在经营管理、机制创新、经济效益方面都取得了可喜的成绩,得到了各级领导的认可,二00五年十二月三十日,GPS产品通过了国家安全防范报警系统产品质量监督检验中心、公安部安全防范报警系统产品质量监督检验测试中心、上海市安全防范产品质量监督检验部的检验报告。

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推荐网络例句

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。