查询词典 unknown

Secondly, by the P-L estimation of survivor function, this paper proposed the regression models of polynomial cumulative hazard function distribution models, respectively in the case of complete date and random right censoring date; meanwhile generalized least squares estimations of unknown parameters were proposed respectively using two steps algorithm and principal component analysis algorithm.

与已有的关于多项式危险函数模型的研究成果相比，首先本文在统计模型的构造上充分考虑了累积危险函数乘积限估计量的非独立性，给出了协方差矩阵的估计；其次在模型检验方面，本文利用非参数回归分析方法，充分利用了数据本身的信息，减少了对回归关系假定的主观因素，因而分析结果更为可靠。

However, the exact mechanism by which cumulus cells promote oocyte aging is unknown.

我们之前的研究证明卵丘细胞能够促进小鼠卵母细胞老化。

It was at the start already suspected that cuneiform developed from another hitherto unknown language.

它一开始的时候就令人怀疑楔形文字是从另一种迄今为止也未知道的语言发展而来。

E.g Madame Cur ie worked day and night in search of the unknown matter.

居里夫人日夜工作，寻求这个未知的物质。

Curie'.'' joined with her in search of the unknown radiation.

居里'。''也和她一起寻找这未知的放射性物质。

The unknown writer, though his opinion is of no value on the origin of the "Cursus", may well have known about some of these of his own knowledge; but through the seventh century there are indications of a tendency to adopt the Roman or the Monastic "cursus" instead of the Gallican, or to mix them up, a tendency which was resisted at times by provincial councils.

未知的作家，但他认为是没有价值的起源" Cursus "，很可能已经知道一些他自己的知识，而是通过七世纪有迹象表明一种倾向，通过罗马或寺院" cursus "，而不是高卢圣，或组合起来，一种倾向是抵制，有时由省级议会。

BOSTON - Recent sophisticated cyber attacks on Google Inc and other businesses exploited a previously unknown flaw in Microsoft Corp's Internet Explorer browser. The weakness in the world's most widely used browser was identified by security company McAfee Inc, and later confirmed by Microsoft.

最近发生的对于google以及其他公司的网络攻击暴露了微软浏览器的一个未知的漏洞这个发生在世界最大的浏览器上的漏洞随后被吗咖啡公司确认，随后微软公司证实了此事。

Although the research on the biophysical properties, genomic structural analysis and Cytopathology of the virus have been accomplished, the function of structural protein and the molecular mechanism of its infection are still unknown in case of the absence of the stable cell model of PfDNV infection in vitro.

但长期以来，由于缺乏稳定的PfDNV体外感染的细胞模型，PfDNV结构蛋白的功能及其复制侵染的分子机理仍不清楚。

THIS spooky image of an unknown boy gave Angie D'Arcy the shivers when she had her photos developed.

安琪达西的照片洗出后，看到上有个怪异的男孩，她根本不认识，这令她感到不寒而栗。

Sorry, your external IP is unknown, so you can't send a file or initiate a DCC CHAT.

对不起，找不到你的外来IP，所以你不能传送档案或发起DCC聊天。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"