查询词典 modification

It has recently reported that chromatin modification plays an important role in regulation of gene expression.

近年研究发现，染色质修饰在基因表达调节中起重要作用。

The melting speed, overheat temperature, pouring temperature and modification in production of high chrome cast iron were studied.

对高铬铸铁的熔炼速度、过热温度、浇注温度及变质处理进行了研究。

Objective To seek for a suitable chamical agent for surface modification of chrysotile.

目的 寻求一种适宜的石棉表面改性剂。

As an important surface modification method, laser cladding has drawn more and more attention in recent years.

激光熔覆作为表面改性和快速成形的一种重要方法，得到越来越多的关注。

The characteristics and applications of laser cladding in materials processing and surface modification technology which used in the aviation industry are introduced.

概述了激光熔覆技术在材料加工和表面改性上特点及在航空工业中的应用。

Meanwhile, it could be seen that there does not exist a confidence interval with width less than 0.5 because of the property of Poisson distribution. Based on these conditions, the author mainly carried out research into two aspects of this problem as follows. Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example,"exact" confidence interval, Wald confidence interval and Bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed .Also, several better confidence intervals such asare also presented .Secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two-stage interval estimate procedures. At the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. The numerical computation shows that the method considered in this dissertation have good properties and applied value.

同时，由于Poisson分布的特性，我们知道不存在其参数区间长度小于0.5的置信区间，基于这些情况，我们主要展开了以下两个方面的研究：一是利用数值计算分析与理论分析的方法对现有的若干置信区间如"精确"置信区间，Wald置信区间，Bayes置信区间等进行分析比较，发现了一些缺陷，针对这些缺陷，我们进行适当的修正，并得到几种性质较好的置信区间如：修正大样本区间Jeffreys原则下置信区间二是针对已给定的置信系数与区间长度，我们提出了一种渐近的两阶段区间估计程序，并利用数值计算的方法，在各种置信系数与区间长度限定下，算出了最优的第一阶段观测次数，大量数据表明，本文考虑的方法性态良好，具有应用价值。

Climate modification is essentially the excessive heating of the planet, which results in dramatic climatic changes.

修改主要是气候的过度加热的星球，从而导致巨大的气候变化。

Open for extension AND Closed for modification .

对扩展是开放的，对修改是封闭的。

A module should be open for extension but closed for modification.

一个模块应该只在扩展的时候被打开，在修改的时候是关闭的。

Should be open for extension, but closed for modification.

软件实体应该对扩展开放，对修改关闭。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐