查询词典 difficult problem

Give birth to content and food engineering according to university of industry of project technology chief, Dalian courtyard dean Zhu Bei osmund professor introduction, this project developed microtherm vacuum to permeate first flavor to style of technology, stage warms up and cool antiseptic processing technique, in the treatment that uses at eating abalone product namely, solved original feed the difficult problem of technology of not easy pilot such as abalone product appearance, mouthfeel, aroma, color namely, built the manufacturing technology system that feeds abalone namely, to develop other ocean shellfish fed a product to lay good foundation namely; Use first from dissolve enzymatic with outside polysaccharide of abalone of extraction of method of source enzymatic compound, raised the recovery rate of polysaccharide greatly; Use enzymatic law and the method that Sevag law photograph combines, solved effectively take off the difficult problem of miscellaneous albumen in dividing abalone polysaccharide, raised polysaccharide purity, maintained polysaccharide active, the technical system of the preparation that built abalone polysaccharide, detached, rarefied, analysis, draw lessons from goodly to developed polysaccharide of other and marine animal to offer.

据项目技术负责人、大连工业大学生物与食品工程学院院长朱蓓薇教授介绍，该项目首次开发了低温真空渗透调味技术、阶段式升暖和冷却杀菌加工技术，并应用于即食鲍鱼产品的加工中，解决了原有即食鲍鱼产品外形、口感、香气、颜色等不易控制的技术难题，建立了即食鲍鱼的生产技术体系，为开发其他海洋贝类即食产品奠定了良好的基础；首次采用自溶酶与外源酶复合的方法提取鲍鱼多糖，大大提高了多糖的提取率；采用酶法与Sevag法相结合的方法，有效地解决了脱除鲍鱼多糖中杂蛋白的难题，提高了多糖纯度，并保持了多糖活性，建立起了鲍鱼多糖的制备、分离、纯化、分析的技术体系，为开发其他海洋动物多糖提供了良好的借鉴。

How to deal with the restrictions of deep excavation is a very difficult problem. This paper analyzes the restrictions of pile-support structure detailedly, uses a castigatory function to deal with the restrictions, and adds the castigation to the function. Now the problem has changed to solve a minimal problem, and GA can be used to the optimal design successfully.

束条件的处理是遗传算法应用到深基坑支护结构优化的难题和重点，本文详细分析了桩撑支护结构的约束条件，采用了罚函数法对约束条件进行处理并反映到适应度函数上，使其变为无约束的极小值问题，从而使遗传算法得以顺利实施。

The frontogenesis process involves in the interactions among the systems of multiple scales. Since the hardness of the nonlinear problem, it is difficult to study frontogenesis analytically. The introduction of the effects of orography, friction and diabatic processes generally makes impossible the analytical resolution of the problem and leads to the use of numerical models. Primitive equations are numerical integrated together with a detailed description of physical processes. The circulation obtained is then used to diagnose and test theoretical mechanisms. It should be noted, however, that a fully description of frontogenesis in explicitly resolving the of large-, meso- and micro-scale flow in the same framework is not yet possible because of the excessive computer capacity and the time required. In order to deal with the problem, the action of large-scale background has been simplified and taken into consideration through the addition of the forcing into the nonhydrostatic cloud model.

大气锋生是一种多尺度相互作用的过程，理论研究遇到非线性的困难，在考虑地形、摩擦、非绝热等物理过程之后，解析研究更加棘手，通过数值模拟搞清其中的物理机制是重要的研究手段，但是把大、中、小尺度甚至微尺度的系统及其相互作用过程在一个模式里同时模拟好仍然受计算机速度和容量的限制，本论文在非静力云模式中通过强迫方式加入大尺度变形场的作用，在考虑到大尺度背景作用的同时，可以充分利用云模式所提供的丰富物理过程、非静力和高分辨率特点，开展一些过去较难进行的研究工作。

Graph coloring problem is a classic difficult problem of graph theory. It is a fundamental problem in scientific computation and engineering design.

图的染色问题是图论中的一个经典难题，它也是科学计算与工程设计中一个重要和基本的问题。

The problem of sub-Riemannian geodesics is a Lagrange problem with constraint. How to describe the constraint condition "γ'∈ D, a. e." is a difficult problem.

次黎曼测地线问题是变分学中的一个有约束的Lagrange问题，但在变分的过程中有个难点―如何推出约束条件"γ'∈D，在上几乎处处成立"的解析式。

There is no difficulty for us to solve N-K problem for submerged bodies by the coupled element method, but for wavemaking problems of the bodies piercing free surface, we get a difficult problem of line integral on the free surface when we solve the boundary value problem in the external region by boundary element method.

对于深潜物体的N—K问题，用耦合元方法求解不存在根本性的困难，但对于水面船波兴波问题，采用边界元方法来处理外域中的边值问题而出现了所谓的自由面线积分问题。

If you apply this method to solve problem, most of mechanism synthesis problem will turn into one problem, that is to solve the equation set. The most difficult point is get full solution of the equation set, thus it can provide a wider range for optimized project.

用解方程组法进行机构综合时，大多数机构综合的问题都可以转化为求解非线性方程组的问题，而其难点在于求出非线性方程组的完全解，以便为优选方案提供较大的解空间。

By using the transfer matrix method of multibody system, the hard problem of computation of the vibration characteristics of LRMLRS coupled with rigid bodies and elastic bodies is solved which is very difficult to the ordinary dynamic methods, and the vibration characteristics of LRMLRS which is varied when the number of rockets in the launch device is varied, is obtained conveniently. By developing augmented eigenvectors of the LRMLRS and its orthogonality conditions, the nonorthogonality problem of the multibody system including rigid bodies and elastic bodies is solved and the exact analysis of the dynamics response of the LRMLRS including rigid bodies and elastic bodies is realized. By using the random integer programming method, the hard optimization problem which contains continuous variables, discrete variables and random variables at the same time is solved. This method provides a technology for optimum design with random variables and discrete variables. The dynamic optimum design is realized to decrease the number of rockets consumption in the LRMLRS test. The simulation system of dispersion of fire is established by using the maximum entropy method to estimate dispersion of fire.

通过应用多体系统传递矩阵法，解决了刚弹耦合远程多管火箭多体系统振动特性这一通常力学方法不便于解决的计算难题，方便地获得了远程多管火箭振动特性及其随发射架上火箭弹个数变化而变化的情况；通过构造增广特征矢量及其正交性条件，解决了刚弹耦合多体系统特征矢量不具有通常意义下的正交性的难题，实现了对刚弹耦合远程多管火箭动力响应的精确分析；应用随机整数规划法，解决了同时考虑连续、离散和随机变量等多种设计变量的优化设计难题，为含随机和离散变量的优化设计提供了手段，实现了减少远程多管火箭试验用弹量的动态优化设计；建立了应用最大熵法估计的密集度仿真系统，优化射序和射击间隔，实现了提高远程多管火箭射击密集度的动态优化。

This dissertation emphasize put forward the problem of Taizhou farmer specialty cooperation:(1) development was not enough quickly, bestrow was small;(2) corporation status of cooperation was not definitude;(3) favourable revenue problem of cooperate organization could"t solve;(4) financing of cooperate organization was difficult carried out;(5) sell problem of cooperation;(6) bowel acted up;(7) associator relation was not compactness;(8) service arrangement was lowness, market competition wasn"t strong;(8) bring too much administration.

本文着重指出台州市农民专业合作社发展存在的问题：(1)发展不够快，覆盖面小；(2)合作社的法人地位问题未明确；(3)合作社的税收优惠问题未解决；(4)合作社的融资问题难落实；(5)合作社的销售问题；(6)内部运作不够规范；(7)与会员的利益关系不够紧密；(8)服务层次低，市场竞争力不强；(9)行政色彩较浓。

The gap element method is proposed in the paper for two kinds of problems, which include contact problem and gap joint problem. Elasticity contact problem falls into the category of unknown boundary value problems. It follows that the contact area and contact conditions or states can never be determined without special mathematical analysis, which is a very difficult work. The boundary conditions of the contact surfaces are deduced.

文中给出了间隙元法在空间可动部件接触问题中的应用，推导了其几何边界条件和力学边界条件，利用虚功原理推导了含间隙元弹性接触问题的有限元方程式，给出了其数值解法的迭代步骤，并指出了利用间隙单元进行分析的特点。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。