不可实现的

It was the apparition of youth to youth, the dream of nights become a reality yet remaining a dream, the longed-for phantom realized and made flesh at last, but having as yet, neither name, nor fault, nor spot, nor exigence, nor defect; in a word, the distant lover who lingered in the ideal, a chimaera with a form.

那是青春对青春的启示，已成好事而又止于梦境的梦境，向往已久、终于实现并有了血肉的幽灵，但还没有名称，也没有罪过，没有缺点，没有要求，没有错误，一句话，是一个可望而不可及、停留在理想境界中的情人，一种有了形象的幻想。

A novel method for monitoring the state of transformer windings by identifying parameter of leakage inductance is presented in this paper, using Least Square techniques based on the equivalent equation of transformer leakage inductance. The mathematical model is derived for on-line identification of winding electrical parameter.

以变压器漏电感方程作为绕组参数在线计算的模型，提出了一种利用最小二乘算法进行绕组漏电感参数实时辨识从而实现绕组变形在线监测的方法，推导了用于变压器漏电感参数辨识的方程，针对参数的不可辨识问题提出了解决方案，分析了辨识结果产生误差的原因。

In this paper the software using the method of integral equation to calculate 3D magnetic field and another two programs which use the finite column method to calculate 3D heat field with phase transition and 2D gas-flow field are completed. These programs provide such technique as the access to large quantity data and a simple but effective method to eliminate hidden lines of objects, which are necessary for the calculating of 3D field.

本文应用积分方程法，编制了三维磁场计算软件，应用有限容积法编制了考虑相变的温度场计算软件和气流场计算软件，软件中实现了大容量数据的存储，提出一种简便的消隐方法，这些功能对于三维场的计算不可缺少。

The generators and irreducible representation coherent stato of the SU(1,1) group are constructed by using the inverse operators of hose harmonic oscillator, and the inhomogeneous inverse differential realization s of the SU(1,1) group are derived

利用玻色振子的逆算符构造了SU（1，1）群的生成元和不可约表示的相干态，导出了SU（1，1）群的非齐次逆微分实现。

The method comprises the following steps:(1) the nodes of the sensor adopt the delaminated structure; the program memorizer is divided into the microkernel region and the user program region; the microkernel region is a fixed region; and the user program region is a nonupdatable region;(2) in the sensor network, a function upgrading code image is encapsulated into a data packet and injected to the network by a sink node; under the control of the microkernel region, the data packet is diffused in the whole network in a gradual jumping mode and sent to each node of the network; and (3) the nodes of the sensor utilize the delaminated structure to realize the self-function updating, thereby completing the self-maintenance of the function of the nodes.

其步骤如下(1)传感器节点采用分层结构，程序存储器分为微内核区和用户程序区，微内核区为固定区，用户程序区为不可更新区。(2)传感器网络中sink节点将功能更新代码映像装入数据包并注入网络，在微内核区的控制下，数据包以逐跳的方式在整个网络中扩散，传送至网络中的每个节点。(3)传感器节点利用分层结构来实现自身的功能更新，完成节点的功能自维护。

While Western scientific and economic modernity will continue to have influence on China - Beijing's overall strategic goal is modernization - the Chinese world will have considerable quantitative and qualitative impact on the global village - in its civilizational expression carried by the Chinese people, China cannot be diluted in the globalization process.

由於中国的总体目标是实现现代化，西方先进的科技、经济仍将继续发挥它的影响力，但中国将对地球村带来相当的冲击，因而中国在全球化发展进程中的作用不可低估。

In China, where the present is to a certain extent history, snapshots can be misleading; discourses should integrate different "clocks" and be attentive, behind shorter developments or even ephemeral fashions, to very slow movements, what Fernand Braudel (1902-85) called the longue duree.

由於中国的总体目标是实现现代化，西方先进的科技、经济仍将继续发挥它的影响力，但中国将对地球村带来相当的冲击，因而中国在全球化发展进程中的作用不可低估。

For naturally cooled monobloc barrel, its thermal condition in regular regime can be evaluated by measuring the outside temperature of two arbitrary rounds;(2) During a sustained firing process, unsteady heat conduction exists in a monobloc barrel, whereas unsteady and quasi steady heat conduction exist with actively cooled composite barrels, meaning that the thermal condition changes from uncontrolled to controlled;(3) Different combinations of the convective heat transfer coefficient h and thickness of gun barrel δ have much effects on cooling the bore temperature.

利用有限元软件分析了某大口径火炮身管的温度场分布，并对自然散热条件下的单筒身管和主动冷却条件下的复合身管温度场进行了比较，其结果为(1)身管温度场分布存在初始和正规工况阶段，后者的单筒身管热状态可以通过测定任意两发身管外表面温度来评估；(2)持续射击过程中，单筒身管始终处于非稳态导热过程，主动冷却身管则包括非稳态和准稳态两个过程，实现了身管热状态由不可控向可控转变；(3)对流传热系数h和身管壁厚δ的组合对降低内膛温度具有很大影响。

Because precise determination of a computer virus is undecidable,a method based on improved K-nearest neighbor to detect computer virus approximately is presented in this paper.

由于计算机病毒检测的不可判定性，提出了一种基于改进的K最近邻检测方法来实现对计算机病毒的近似判别。

The process of balance is on thealternation of arch and beam、 explores the space-time law of separatedstrata"s occurrence、 development and distribution and this paper damasks theoverlying rock as injecting zone and no-injecting zone from the aspect of controllingoverlying rock.2.The separated strata is over fracture zone and under integral crook zone inwhere the rock formation"s moving is of monolayer or of many layers more oftenthan not, and the thickness of strata is very small while comparing with integralcrook zone.

通过物理模拟及数值仿真模拟的实验研究，分析了采动覆岩的移动与破坏过程，提出了采空区上方覆岩的平衡形式是以拱和梁交替作用来实现平衡→失稳→再平衡的力学过程观点，并详细研究了覆岩中离层产生、发展与分布的时空规律，进而从覆岩控制角度划分了可充填离层带与不可充填离层带，为实际应用奠定基础； 2。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。