可利用性

CIMMYT synthetic hexaploid wheats were employed to cross with rye for evaluating the crossability of SHWs and screening SHWs with high crossability for distant cross. Great variation of the seed set percentage was observed among 102 SHWs ranged from 0% to 72.49%. Of 102 SHWs, 11 ones possessed the crossability higher than 50%, and one (YAR/Aegilops tauschii 518) had a similar crossability as Chinese Spring.

利用102份从CIMMYT引进的人工合成六倍体小麦与黑麦杂交，分析了人工合成六倍体小麦的可杂交性，结果表明：人工合成小麦的可杂交能力变异很大，从0%~72.49%；其中有11份人工合成小麦的可杂交率超过50%以上，1份人工合成小麦YAR/Aegilops tauschii 518的杂交结实率达到72.49%，与中国春相似。

It order to overcome the difficulties in representation of developable surface s utilizing traditional approaches,based the concept of duality between points and planes in 3D projective space, a direct explicit method of computer-aided design for developable surface s was presented.

基于三维射影空间中点和平面间的对偶性，提出了计算机辅助设计五次样条上可展曲面的一种简单且有效的方法，通过采用该方法，可利用具有B啨zier和B样条基的控制平面设计可展曲面。

This article use the improved integral inequalities with the deviate variable and some skills of inequalities as well as related knowledge about second-order differential equation,to obtain the following results: the classification of limit point case or limit circle case and boundedness for second order differential or difference equation with deviative variable,discussed the classification for certain n-order differential equations,Criteria for the classification of second order differential equation with deviative variable.

本文利用推广的具有偏差变元的积分不等式，结合不等式的一些技巧以及常微分方程的相关知识对一类二阶具有偏差变元的微分方程及一类二阶差分方程极限圆型的分类问题作了相关的研究工作，并且讨论了一类n阶具有偏差变元的常微分方程解的平方可积性与有界性和一类二阶非线性具有偏差变元的微分方程解的有界性。

In reservoir engineering,the Kiny factor of core perme-ability can be used to evaluate a reservoir heterogeneity;the development data for individual layers in layer series of de-velopment can be used to estimate the production status of layers;while profile-testing data can be applied to analyze water injectivity and fluid production.

在油藏工程中可利用岩心渗透率的基尼系数评价储集层的非均质性，利用开发层系中各小层开发数据评价小层产出状况，利用剖面测试数据分析吸水和产液状况。

Damsite selection of Yilan Navigation Hydro- junction on Songhuajiang River;2. Study on the general layout scheme for reinforcement and extension project of Guoyang junction sluice;3. The river reach of Dadingzishan Navigation-power junction engineering is characterized by wide grade II terrace,large distance between the two dikes,thick covering of river bed,and strong movability and permeability of riverbed,and the overall layout is the essence of construction of low-head navigation-power junction on the reach.

松花江大顶子山航电枢纽工程河段具有Ⅱ级台地宽、两岸堤距大、河床覆盖层厚、河床质可动性及渗透性强等特点，该河段兴建低水头航电枢纽工程其总体布置是关键，利用正态物理模型(11∶00)及遥控自航船模等研究手段，对大顶子山航电枢纽工程预可、工可、初步设计及施工图设计等阶段枢纽总体布置进行了多方案比选，提出枢纽主要建筑物布置：自右岸依次为船闸、10孔泄水闸、电站、28孔泄水闸及土坝。

Using the result for non-restricted model, we transform the restricted model to common model, and multi collectivity model to single collectivity model, thus, the necessary and sufficient conditions that nonhomogeneous linear estimators for Sβ are admissible in the class of nonhomogeneous linear estimators are obtained which filled the blank for admissibility for restricted linear model.

对线性等式约束的共同均值线性模型，利用无约束单总体模型的现有结果，通过适当变换，把等式约束模型向无约束转换，并把多总体转换为单总体，在矩阵损失下找到了均值参数β的条件可估函数Sβ的线性估计∑mAiyi+a在非齐次线性估计类中可容许的充要条件，填补了等式约束的共同均值线性模型可容许性方i=1面的空白。

Then according to the vicinal economic development objective and resources condition,this paper makes the strategic program of development and exploitation rationally on coal resource in order to ensure the need of sustainable and rapid development of Inner Mongolia\'s national economy.With the study on the development and exploitation strategy of Inner Mongolia\'s coal resource from the perspective of Space Economics,it\'s favorable to make certain the faced environmental problems on coal resource development of Inner Mongolia.

在世界经济一体化，资源全球化的趋势日益加深的今天，内蒙古为实现经济的可持续发展及建设小康社会的任务，必须认真分析本地区资源可供性形势，根据本地区的经济发展目标和资源状况，合理进行煤炭资源开发利用战略规划，以保障内蒙古国民经济可持续高速发展的需要。

In designing process, it will waste time on determining parting directions. For this reason, we generate a method for checking partibility by using the relations of the normal vectors of shapes. If the mold was decided as partible object, the process would evaluating the range of the parting directions. Also, the result of parting directions will be demostrated by one cone named parting cone. The total procedures of determining partibililty require O time.

基於这样的原因，本文提出一个判断可脱模性的方法，利用自由曲面上三角化之后所得到的法向量的分布情形，进行运算，若判断为可脱模模型，并计算出可脱模模型的脱模范围，使用圆锥表示之，此圆锥既称为脱模角，过程所需的时间复杂度为O；若判断为不可脱模模型则所需要的时间复杂度为O。

In this paper, the verifiability of the voters' qualification and talliers' identification will be solved by a dynamic multi-secret sharing scheme without invoking more zero knowledge proof to maintain privacy, universal verifiablitlity, and anonymity of ballots. It holds more communication efficiency and more security than the proposed schemes in early time.

提供的电子投票方案，无须调用多次交互式的零知识证明验证投票人的选举资格和监票人的身份，而是利用动态多密门体制方便地实现了选票的秘密性、广泛可验证性、公平性和匿名性，较之以前的投票方案具有较高的通信效率和安全性。

In this paper, the verifiability of the voters' qualification and talliers' identification will be solved by a dynamic multi-secret sharing scheme without invoking more zero knowledge proof to maintain privacy, universal verifiablitlity, and anonymity of ballots.

提供的电子投票方案，无须调用多次交互式的零知识证明验证投票人的选举资格和监票人的身份，而是利用动态多密门体制方便地实现了选票的秘密性、广泛可验证性、公平性和匿名性，较之以前的投票方案具有较高的通信效率和安全性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。