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Today, there are many commercial CAD development platforms, such as CV-DORS, ACIS and DESIGNBASE. But these products all lay emphasis on geometry modelling.

面向对象的CAD开发环境则是从产品建模的角度出发，其中心思想是在开发环境的核心完成设计信息的管理，并提供应用系统的开发界面。

Y39 should carry a novel resistance gene. A dominant major gene conferring resistance to powdery mildew of wheat was identified in a BC〓F〓 population derived from a cross between amphidiploid Am4 and wheat cv. Bainong3217. The gene originated in T.

本研究的主要目的是对从小麦野生近缘种转移到普通小麦中的抗小麦白粉病基因进行鉴定、微卫星标记和作图，并用鉴定的微卫星标记对一些高代品系所携带的抗白粉病基因进行检测。

It is proposed the gene is designated as Pm34. A dominant major powdery mildew resistance gene in a BC〓F〓 population, derived from a cross between an amphidiploid of T. durum acc. DR147-Ae. caudate acc. Ae14 and wheat cv. Laizhou953, was identified.

在由硬粒小麦DR147-尾状山羊草Ae14合成的双二倍体与普通小麦品种莱州953杂交衍生的BC〓F〓群体中鉴定了一个显性抗小麦白粉病基因。

In this paper, male sterile line of alfalfa was used to be improved with crossing, because the seed production of crossing is low. The affecting factors of seed production of male sterile line of alfalfa and its crossing progenies that are crossed with male sterile lines of alfalfa and good alfalfa that male is fertile were analyzed. The characteristics of female reproductive organs of male sterile line and its crossing progenies are analyzed in cell morphology. The genetic difference of male sterile line and its crossing progenies are analyzed in enzyme protein. The results showed: 1、Rate of podding of nature crossing and fecundity of artificial crossing of the male sterile plant BC1-2 that is the crossing progency of male sterile line of alfalfa and Medicago varia Martin.cv.'Caoyuan No.1'is higher than male sterile lines. Rate of podding of nature crossing and fecundity of artificial crossing of the male sterile plants BC1-19、BC1-21、BC1-22、BC1-23 that are the crossing progencies of male sterile line of alfalfa and Medicago sativa L.cv.

针对苜蓿雄性不育系杂交制种产量低的问题，采用杂交法对苜蓿雄性不育系进行改良，以原苜蓿雄性不育系为轮回亲本与雄性可育优良苜蓿品种杂交，分析苜蓿雄性不育系及其杂交后代种子产量的影响因素，从细胞形态学方面观察和分析杂交后代及原不育系在雌性生殖器官上的变异特点，从酶蛋白水平对杂交后代及原不育系的遗传差异进行分析，初步研究结果如下： 1、苜蓿雄性不育系与草原一号苜蓿的杂交后代不育株BC1-2，以及苜蓿雄性不育系与X′(苜蓿雄性不育系与新疆大叶苜蓿的杂种F1代)的杂交后代不育株BC1-19、BC1-21、BC1-22、BC1-23的天然杂交结荚率和人工杂交制种的结荚率和百粒重均高于原苜蓿雄性不育系。

212R SERIES Variable area purge flowmeter, compact type, with glass measuring tube suitable for gases with side/side connections.

CV(CV-CVO-CVM Models)/TGO/PLD/PL Series 4流量计带标准法兰的可变量程流量计可以适用于小流量，大流量及气体方面。

Results: Good linearity was observed in 6～1512μmol.L-1 range for phenylalanine, the intra-run and inter-run imprecisions w ere 3.68%and 4.01%, the recovery rate was 98.6%; good linearity was observed in 5.4 ～1380.0μmol.L-1 range for tyrosine, the intra-run and inter-run i mp recisions were 1.87%and 2.59%, the average recovery rate was 98.9%.

酪氨酸的线性范围为5.4～1380μmol.L-1，最低检测浓度为0.7。μmol* L-1，平均回收率98.9%，批内CV为1.87%，批间CV为2.59%。健康儿童血清苯丙氨酸浓度为(61.4±10.8)μmol.L-1，血清酪氨酸浓度为(131.8±28.0)μmol.L -1。健康成人血清苯丙氨酸浓度为(69.3±8.6)μmol.L-1，血清酪氨酸浓度为(83.6±9.4)μmol.L-1.4例苯丙酮尿症患儿的血清苯丙氨酸浓度为1296～1759μmol.L-1，血清酪氨酸为29.5～53.5μmol.L-1。

Vitis amurensis CV. ShuangYou was taken for the material of the test, 14C tracer marker technology was used to study the accumulation and distribution of assimilation products in Vitis amurensis CV. ShuangYou.

本试验以双优山葡萄为材料，利用~(14)C示踪技术研究山葡萄各器官同化产物的积累和分配，以探讨山葡萄同化产物运输与分配特点。

But significant differences were found in coefficient of variation and broad-sense heritability (H2) of the three characters: CV and H2 of self-pollinated fruiting rate were both greatest, with the variation mainly resulted from inheritance, and high inheritance potential; H2 of fertile flower rate was the least and its variation was less from inheritance; CV of average fruit weight was the least and its inheritance potential is small. Thirdly, the ratios of sweet to bitter kernel of F1 progenies in positive and reverse crosses between Katy and Taianshuixing were 18∶16 and 13∶12, and were both in agreement with a 1∶1 segregation by χ2 test, which demonstrated that the bitter kernel character of Katy was heterozygous.

但3个性状的变异系数和广义遗传力(H2)均差异很大，其中自交坐果率的变异系数(101.5%～139.1%)和广义遗传力(87.1%～91.4%)均较大，表明变异主要来自遗传效应，并且自交坐果率的遗传潜能大；有效花比率的广义遗传力最小(36.8%～49.1%)，表明其遗传效应较小；平均单果重的变异系数最小(24.0%～29.7%)，说明平均单果重的遗传潜能小；（3）凯特与泰安水杏正反交的杂种一代甜仁与苦仁的比例分别为18∶16和13∶12，经χ2检验符合1∶1的分离比例，证明控制凯特杏甜仁与苦仁这对性状的基因位点是杂合的。

Learning of all the three linguistic forms in terms of both short-term and long-term effects. The differential results have a close relationship with the MT and CV features of them. A form with lower CV might be more attention-demanding in terms of its inherent semantic value.The thesis consists of 5 chapters: Chapter 1 is an introduction of the research topic, purpose and significance; Chapter 2 is a selective literature review of the enhancement techniques and mixed results of FonF in the previous studies, Chapter 3 presents the theoretical framework the present study wasbased on; Chapter 4 reports on the present study, including the hypotheses, operational definitions, subjects, target language forms, research design, procedures, instrument, data collection and analysis, analysis, discussion; and Chapter 5 is the conclusions of the present study.

本文由五部分构成：第一章为引言，介绍选题、研究目的及其意义；第二章对前期'有意注意形式教学'研究中注意强化技巧及取得的不同研究成果进行了回顾，并指出了尚存问题；第三章为理论框架，根据注假设意理论及输入加工理论，建立了本研究假设；第四章报告了现行研究，包括研究假设，目标语选用，实验及其数据收集、整理、分析、讨论；第五章报告了研究结论：'有意注意形式教学法'只对学习部分语言形式有效；学习某些语言形式时传统教学法更有效；语言结构复杂性对教学方法的有效性具有显著影响。

Results: The high plasma osmotic pressure caused by glucose would lead to the artefactual erythrocyte swelling (maximum CV is 63.04%). And the rise caused by sodium chloride or urea would not show an obvious effect in MCV detection (CV.5%).

结果：由葡萄糖导致的血浆渗透压升高使MCV测定值的假性增高（最大偏差可达63.04%，由NaCl及尿素导致的血浆高渗压对MCV测定的影响不明显（偏差＜1.5%）。

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。