查询词典 variable annuity

Support Variable Encode VCD, you could backup whole DVD into only one CDR and play it on home dvd player.

支持可变编码的VCD ，您可以备份整个DVD放入只有一个的CDR和发挥它放在家DVD播放机。

The distributed parameter model is changed into variable coefficient nonlinear stiff ordinary differential equations by central difference method.

运用中心差分法将分布参数形式的系统模型转换为一变系数非线性的刚性常微分方程组。

random variable ; law of large number ; central limit theorem ; Mathematica

鉴于随机模拟过程的易操作性，笔者只对大量独立同分布的随机变量进行验证，即只讨论

Most of them rely on the central limit theorem, that states that the mean of N independent realizations of a random variable with mean u and variance d^2 approaches a normal distribution with mean u and variance d^2/N .

在蒙特卡罗评估框架内大量的各种选择性算法已经被推出，他们中的大部分依赖于中心极限定理，一个均值为U方差为D^2的随机变量的N次独立实现的平均值接近于一个均值为U方差为D^2/N的正态分布。

They discovered almost 800 Cepheid variable stars,a special class of pulsating star used for accurate distance measurement.

他们发现了差不多800个造父变星，一种用于准确测量距离的特殊变星。

Hisfirst great discovery was made when he recognized a Cepheid variable star.

他的第一个伟大的发现是他观察到了可变恒星"瑟福尔的"。

John Learned at the University of Hawaii in Honolulu and his colleagues think that signals could be sent by manipulating Cepheid variable stars.

位于火瑙鲁鲁的夏威夷大学的John Learned和他的同事们认为信号可以通过操纵造父变星来传递。

His first great discovery was made when he recognized a Cepheid variable star.

他识别出造父变星，做出了第一个重大发现，在仙女座星云的外围区域。

Of the great nebula called Andromeda. Cepheid variable stars are stars whose brightness changes at

被称为瑟福尔的可变恒星的亮度都是在一个很有规律的时段里改变。

This view of NGC 3370 was obtained by the Hubble Space Telescope using the Advanced Camera for surveys and is sharp enough to identify individual Cepheid variable stars in the galaxy.

星系NGC 3370的中心分布着轮廓鲜明的尘埃带和一个不太容易辨认的核。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。