封闭

Modal analysis of an acoustic system can determine its natural frequency and show the distribution of the acoustic quantities in space, give the knowledge about the way that the acoustic system responses are affected when changes are made in the excitation sources or in the domain geometry, and provide valuable information for the noise control of closed three-dimension domain.

通过对声学系统的模态分析，可以得到其固有频率以及在此频率下声学量在声场空间上的分布，了解到声源及声场空间几何参数的变化对声学系统的相应的影响，为三维封闭空间的噪声控制提供了依据。

According to the restrictive conditions, the closed domain of modification coefficients are gotten. Modification coefficients can be remodified and adjusted with the use of CAD method, and the proper modification coefficients can be obtained finally.

根据约束条件规划出变位系数的封闭区域，借助计算机辅助手段来求取符合条件的变位系数，并可进行重复修改、调整，最终得到满足要求的变位系数。

First, it adopts the limited amount analysis in a closed domain basing on the language resource provided by Modern Chinese Dictionary(the revised edition of 2002), and get the numerous data for the amplification, narrowing, uncertain items and the distribution of the part of speech.

首先，以《现代汉语词典》（2002年修订版）为语料来源，采用封闭域的定量分析方法，得出扩大、缩小、待定项以及词性分布等若干数据。

Open for extension AND Closed for modification .

对扩展是开放的，对修改是封闭的。

Software entities should be open for extension, but closed for modification.

软件实体像类，模块等应该对扩展是开放的，而对修改是封闭的。

Classes should be open for extension, but closed for modification.

类应当对"扩展"开放，对"更改"封闭。

C.P : Open closed principle….an object is open for extension but closed for modification.

CP：打开封闭的原则。。。。一个对象是延长开放，但进行修改关闭。

If a poset is explained into a set of propositions in the view of logic,then the algebraic completionis closed for the finite deduction system in logic,therefore,the algebraic completion reflects the logically closed extension of preliminary propositions.

本文考察(来源：A1dBCad论8a文网www.abclunwen.com)这种逼近状态是代数格的情形，一旦偏序关系看作信息的某种逻辑蕴含关系，代数完备的本质是从逻辑上封闭逻辑推理系统。

If you have not returned all the forms by the end of this period, your file will be closed.

你的申请资料将会被封闭。

Zhang Bing filter head from the filter and filter-the first component, the overall injection from its main features is the first filter for Taiwan hollow circular shape, the first by the filter at the top, strip-joints, vertical plate, horizontal plate, filter The first floor composed of horizontal and vertical plate plate symmetrical side of the first set in the filter, filter them by the side of the first formation of a number of strip-joints; par for the hollow tubular filter, filter and the filter rod first floor Phase grounding Department of thread, filter and the filter head-intracavity Intracavity the same, in the filter at a lower open air intake and intake slit, the filter is not closed at the bottom of the same with the outside world.

该长柄滤头由滤头和滤杆组成，整体注塑而成，其主要特点是滤头为中空圆台体形，由滤头顶部、条形孔缝、竖向导流板、横向导流板、滤头底板组成，竖向导流板和横向导流板对称设置在滤头侧面，并由它们在滤头侧面形成若干条形孔缝；滤杆为中空管状，滤杆上与滤头底板相接处有外螺纹，滤杆内腔与滤头内腔相通，滤杆中下部开有进气孔和进气缝，滤杆底部不封闭与外界相通。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！