at random 任意,随便; 任意地,随机地; 随便地,任意地; 随机的,任意的; 随机地,任意地; 随意地,任意地; 随意地,随机地
random n. 〔罕用语〕胡乱行为,偶然的[随便的]行动[过程]。 adj. 1.任意的,胡乱的,随便的;(话等)信口乱说的;(人等)偶然碰到的。 2.随机的;【物理学】无规则的;(石工)(大小)不齐的。 a random guess 瞎猜。 a random shot 乱射(的子弹);流弹。 at random 碰运气地;无目标地,漫无目的地。 n. -icity 随机性,无规性。
In recent years , weng cycle life model , logistic mode , grey model , two - way control model , random method etc . are often used to study oil and gas reserves and output 近年来国内外对油气储量、产量及需求量常用的预测方法主要有翁氏生命旋回模型、逻辑斯谛logistic模型、灰色系统方法、 “储?产量”双向控制方法、随机方法等。
The conclusion is that the back analysis results have the character of unbiasedness , efficiency and consistency . bayes random method which considers the prior errors is better in the back analysis of embankment dam ' s nonlinear materials 结论认为bayes随机反演结果具有无偏性、有效性和一致性的特点;在土石坝等非线性材料反演分析中,考虑先验信息误差的bayes随机反分析方法具有较好的适用性。
Abstract : a fuzzy and random method for estimating the three parameters ofweibull distribution was put forward . the method was tested and verified by the random samples obtained by monte carlo method . and the results showed that the estimating values of the parameters are close to the theoretical value 文摘:提出了威布尔分布三参数估计的模糊?随机方法,并对蒙特卡罗方法产生的随机样本进行了验证;结果表明,求得的参数估计值十分接近理论值。
This paper makes investigation on the establishment of the subject librarian in the libraries of thirty seven universities in china through the network and by using the random method , and points out the problems existing in the implementation of the establishment of the subject librarian of university library , and puts forward some measures for establishing the subject librarian 通过网络以随机方式对国内37所高等院校图书馆学科馆员的设置情况进行了调查,指出了高校图书馆学科馆员的设置在实施上存在的问题,并对设置学科馆员的措施进行了探讨。