期待值,expected value
1)expected value期待值
英文短句/例句

1.muf expected value物料不灭失量期待值
2.Don't try so hard, the best things come when you least expect them to.凡事不要强求,期待值越低,结果就越好。
3.the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value.接近平均数的二阶矩;平均值随机变量的偏差的平方的期待值
4.Probe into Expectations of Society toward Dual-Purpose Teachers of Environment Art Design in Higher Vocational Colleges社会对高职环境艺术设计专业“双师型”教师期待值探究
5.an anticipated event that turns out to be far less significant than was expected.不如所期待的那样有价值的事。
6.Das Wunder von Bern: the Life Is Worth Expecting《伯尔尼的奇迹》:生活是值得期待的
7.Is a dream college worth waiting for?梦想中的大学,值得期待吗?(英文)
8.On Chinese Animation Industry中国动漫产业:期待“产值的飞跃”
9.No matter what, without goals life is not worth while.无论怎样,没有目标的生活是不值得期待的。
10.A Sketch of Mini-novel Creation in 2007;一种值得期待的文体——2007年度小小说创作透视
11.What Can I Expect?" --On the Noumenal Promise of Aesthetic Values;“我能够期待什么”——论审美价值的本体论承诺
12.The Development and Prospect of Narrative Novels since New Period;“新时期”以来中国小说叙事变革的价值定位和前景期待
13.For example, the value of a warrant depends on the value of the underlying share (or "mother share"). Or the value of a gold futures contract is derived from the current price of gold.例如:凭单的价值取决于待敲股票(或母股)的价值,或者黄金期货合同的价值是来自黄金的现价。
14.If one is without hope, one has nothing to look forward to in life.如果一个人心中没有希望,他的人生中就没有什么东西值得期待。
15.Meanwhile, Theo Walcott could finally make his debut for the Gunners in Croatia. Something else to look forward to.同时,沃科特会在克罗地亚第一次亮相,仍然有一些事值得我们期待。
16.But Mourinho is happy to wait for the Ukrainian to prove his worth.但穆里尼奥仍然很乐观的期待乌克兰人来证明自己的价值。
17.The local router checks the response against its own calculation of the expected hash value.本地路由器对照自己计算期待杂凑函数的数值来检查回覆。
18.Variables obtained at the time of listing were analyzed for prognostic value using multivariable analysis.等待期间获取的变量资料以多变量分析的方法判断其预测价值。
相关短句/例句

expectation value期待值
1.In comparison with Wigner distribution,IT goes further into Husimi representation of dynamical quantities and its expectation value.扼要介绍Husimi分布,并在与Wigner分布比较的基础上讨论了力学量的Husimi表示及在Husimi表示中力学量的期待值
3)value expectation价值期待
1.It is essential for the survival and development of higher education to solve these two questions: (1) who ask higher education for (2)what kinds of value expectations.准确厘清、有效解答(1)是谁向高等教育(2)提出了什么样的价值期待等问题,并对高等教育多元价值期待做出系统、全面的归类,事关高等教育系统能否获取必要的生存和发展资源,事关高等教育事业能否赢得合法化存续的基本依据。
2.The developmental strategy of education is a complicated process involving the interaction among a multitude of stakeholders,and the value expectation of the subj ects towards educational developme nt constitutes a major consideration in formulating educational developmental strategies.教育发展战略是一个诸多利益主体互动的复杂发展过程,教育发展主体关于教育发展的价值期待是构建教育发展战略的重要力量。
4)expectation,expected value期待(望)值
5)expectation value期望值,期待值
6)radial expectation value径向期待值
1.By using the accurate inequalities of the electron density at the nucleus and radial expectation values for atomic systems derived by Gálvez and Porras, we separately construct two sets of precise criterion of the wave function, they are another precise criterion independent of energy to test quality of the wave function.利用G偄lvez Porras关于原子体系电子在核处密度和径向期待值的精确不等式 ,分别建立了波函数的两套精确判据 ,它们是独立于能量判据之外的检验波函数精确度的判据 。
延伸阅读

力学量的可能值和期待值  在量子力学中,力学量F用作用于波函数上的算符弲表示。在数学上,对于一个算符,满足       的函数 ui(r)称为弲的本征函数,式中Fi是与r无关的数,称为本征值。如果ui(r)描写微观粒子的状态,则它必须满足单值、连续和有限的标准条件。在这种限制之下,上式中的本征值可以取一系列分立值,或取一定范围内的连续数值。    在测量力学量F时,观察到的只能是它的本征值。若一个力学量的本征值具有分立谱,我们说这个力学量是量子化的。    量子力学中假定力学量的全部本征函数组成一个完全系;这意思是说:描写体系的任一状态的波函数ψ都可以用力学量的本征函数ui展开:       在ψ和ui都是归一化的情况下,上式中的展开系数сi具有如下的物理意义:在ψ态中测量力学量时,得到结果为Fi的几率是|сi|2。    因此,若微观粒子的定态波函数是某力学量算符的本征函数ui(r),则在这一状态中,力学量F取确定值Fi。    在ψ态中对力学量进行多次测量,把所得结果加以平均,就得出力学量在ψ态中的期待值,以〈F〉表示:       上式称为力学量的期待值公式。如果ψ不是归一化的,那么期待值公式应写为