系

In addition to completing all required courses and receiving the minimum credits for graduation of the major, students may take a minor and the course of minor is the same as the optional course under the semester credit limit of STUT regulation.

学生所修辅系学分应在主系规定最低毕业学分数以外加修，其辅系课程视为学生之选修科目，受学则学期限修学分数之限制。

Following the theoretical analysis, binary and ternary miscibility gap have been systemaiically calculated by the CVM. In particular the critical temperatures were deduced in the CV-pair approximation; A method for deriving energy of atomic pair from the mixing enthalpy or the excess Gibbs energy in the Subregular Solution Model was developed.

通过巨势几何性质的分析，明确了开系中巨势、有效化学势和偏摩尔Gibbs自由能的定量关系，建立了一种以巨势以及有效化学势相等为判据计算两相平衡的新方法，使开系与闭系中任意模型描述的稳态与亚稳态相平衡计算均可以通过求巨势—有效化学势曲线的交叉点来实现，从而避免了相平衡最优化计算方法中的收敛性问题。

The technical characteristic,function mechanics and produce techniques of naphtha-lene sulfate salt series superplasticizer,the high performance water-reducing agent such as sulfamic acid series and polycarboxylic acid se-ries,and the multiple superplasticizers are discussed.

对国内外仍广泛应用的萘系高效减水剂，氨基磺酸盐系、聚羧酸系等新型高性能减水剂以及复合型高效减水剂的主要特性、作用原理和合成或生产工艺进行了介绍。

Studied influence of sulphonated naphthalene formaldehyde condensates, polycarboxylic series(SR3), aminosulfonic acid-based series on rheology of sulphoaluminate cement paste. Adjusted setting time with setting retarder, and reduced water dilution, bleeding, segregation of fresh paste with viscosity-modifying admixture.

研究了萘系、氨基磺酸盐系和聚羧酸系高效减水剂与硫铝酸盐水泥的相容性问题，利用缓凝剂有效控制了硫铝酸盐水泥的凝结时间，利用浆体稳定剂成功解决了水泥净浆的板结、泌水问题，从浆体流变学角度研究了外加剂—硫铝酸盐水泥浆体体系稳定性。

In this paper, the orthogonal experimental analysis method is used to study on the effects of molar ratio of the unsaturated vinyl monomers, with carboxylic groups or sulphonic groups or polyoxyethylene side chain groups,etc., and the effects of the mean degree of polymerization in PEO side chains.

根据聚羧酸系高效减水剂的结构特点，采用正交试验分析法，分别研究了带羧基、磺酸基、聚氧化乙烯链酯基等活性基团的不饱和单体的物质的量之比及聚氧化乙烯链的聚合度等因素对聚羧酸系减水剂性能的影响，从而得出合成聚羧酸系高性能减水剂的一种最佳配方，并对试制产品进行了性能试验。

Primary core collection containing 180 apples had been established, and a tree diagram wasconstructed by using wards method. The main results were as follow:①Compared with predecessor research, the classical taxology phylogenetic relationshipamong M. baccata, M. prunifolia and M.

利用DNA扩增结果构建初级核心种质180份，对其进行再聚类分析，得到如下结论：①验证了前人对山荆子系、海棠系和陇东海棠系亲缘关系的经典分类。

According to the geochemical characteristics of Upper Palaeozoic oil and the relationship between the above characteristics and hydrocarbon resource meks of Carboniferous coal series in Konggu-4 well in the Huanghua depression, this paper elaborates the "fingerprints" of sterene and terpane in saturated hydrocarbon fraction from Tertiary oil.

通过对黄骅孔古4井上古生界原油的地球化学特征及其与石炭系煤系烃源岩的亲缘关系研究，特别是与奥陶系原油、灰岩、下第三系原油饱和烃的甾、萜烷精细&指纹&对比研究后，我们认为孔古4井原油应属于上古生界煤系地层自生自储的原生油气藏，而并非下第三系抑或下古生界碳酸盐岩所生。

1Clinic Department, Pasturage and Theriatrics School, Jilin University, Changchun Jilin 130062; 2Institute of Military Veterinary Academy of Military Medical Science, PLA, Changchun Jilin 130062; 3Foreign Language Department, Laiyang Agricultural Univers

1吉林大学畜牧兽医学院临床系，吉林长春 130062；2中国人民解放军军事医学科学院军事兽医研究所；吉林长春 130062；3莱阳农学院动科系，山东莱阳 265200；4北京农学院动科系，北京 102206

With the increasing of concrete deck slab gap for dense transverse girder deck system, the vertical displacement of tied-girder increases unconspicuously, and the internal forces of tied girder and arch rib vary slowly.

针对高速铁路下承式结合梁系杆拱桥，通过有限元分析，对纵横梁桥面系和密布横梁桥面系2种结合方式、混凝土桥面板不同的分块方式等问题进行研究。

objective to investigate the existence of the erythropoiesis inhibitors.methods the present study included twelve undialyzed esrd patients with anemia.the sera from the uremic patients were added to cfu-e and bfu-e culture in the concentrations ranging from 1.25% to 5%.in vitro cfu-e and bfu-e growth in the presence of sera from esrd patients was compared with in the presence normal human subjects with the use of normal mice bone marrows.results the effects of the sera from uremic patients on cfu-e and bfu-e colony growth in concentrations ranging from 1.25% to 5% were investigated to be dose-dependent.the effect increased with the concentrations increasing of the sera（p＜0.05）.there were not significant inhibitory effect on the cfu-e and bfu-e growth of mice bone marrow in vitro from sera of the normal subjects.conclusion the erythropoiesis inhibitors exist in uremic sera which has a dose-dependent inhibitive effects on the growth cfu-e and bfu-e of normal mice bone marrow cells.

选择12例尿毒症肾性贫血未透析患者为试验组，另选正常健康体检者12例为正常对照组，将实验组、正常对照组血清分别稀释成不同终浓度，采用甲基纤维素细胞培养的方法对小鼠骨髓细胞进行培养，对比不同浓度血清组红系集落形成单位、红系爆式形成单位的集落数。结果在实验组中，与血清浓度为0的浓度组相比，与各浓度组血清共同培养的小鼠骨髓cfu-e和bfu-e的集落数均明显减少，且随血清浓度的增加，小鼠骨髓cfu-e和bfu-e的集落数逐渐减少，各浓度组间差异有显著性（p＜0.05）。结论尿毒症患者血清抑制小鼠骨髓红系祖细胞集落形成，随患者血清浓度的增加，抑制作用增强，具有剂量依赖性。

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。