查询词典 selecting

ABSTRACT It is because that the excellent acceptors for maize transgenic engineering are insufficient in our country, especially in the southwest mountain areas of china and hereditary variation regularity for the two characters such as efficiency of embryonic callus induction and number of regenerating plant (these two characters were abbreviated to the nduction efficiency and number of regenerating in the following of the paper, respectively), which hint the maize culturing capacity, is not very clear. Therefore, aiming at picking out superior acceptors, we had made systematic researches on the two characters with combing traditional quantitative-character genetic analyzing methods such as single-factor genetic mating design, diallel crossing genetic design, genetic effect analyzing method and the modern molecular locating method such as QTLs'. The main results are followed.(1) 50 superior inbred lines and about 30 crosses in our country, especially in the southwest of China were used for identifying and selecting the superior genotypes in the above two investigated characters under the same culturing condition in 2000 and 2001. There was very significant difference among the genotypes in the both characters. But the two characters were not certainly related. Some genotypes such as 18-599 and 18-599 were very good in them. For some ones such as zong 31, induction was higher than 18-599 and 18-599 in the efficiency, but it was only 1/3 to the later in regenerating number. In some genotypes such as S37, R08, R15, P138, A318, induction efficiency was just about 3% and scarcely any regenerating plants were got. On the whole, hybrids acted better than inbreeds in the both characters.(2) Two kind of inbreeds were selected as parents of the Griffing's method 1. 18-599 and 18-599 and the inbred line zong 31 are one kind because they are not only superior in the characters of maize cross breeding, such as CA, resistance to disease and the important agricultural characters, but also excellent in transformation characters as the induction and regeneration.

针对我国、特别是西南山地所需玉米转基因工程育种优良受体极为匮乏和反应玉米幼胚培养能力的2个主要性状，即玉米幼胚胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数的遗传变异规律十分不清楚的实际情况，本研究从筛选玉米转基因工程所需要的优良受体入手，采用单因素遗传交配设计、双列杂交遗传交配设计、世代基因效应等传统数量性状分析方法，以及现代分子标记定位主效QTL分析方法，对玉米幼胚胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等2个性状进行了较为系统的分析研究，取得以下主要研究结果：(1)于2000年和2001年通过对我国、特别是西南地区近50份优良自交系和近30个杂交组合，在相同培养条件下，对幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等2个幼胚培养能力性状进行了筛选与鉴定，发现玉米不同基因型具有完全不同的幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数，但幼胚培养胚性愈伤组织诱导率与胚性愈伤组织绿苗发生数并不具有必然的相关关系，有的基因型，如自交系18-599和18-599在胚性愈伤组织诱导率和愈伤组织绿苗发生数等2个性状都表现相当优异；有的基因型，如自交系综31，仅幼胚培养胚性愈伤组织诱导率性状表现高于19-599和18-599，但在胚性愈伤组织绿苗发生数这一性状则与它们有相当大的差距，仅为19-599和18-599的1/3左右；有的基因型，如S37、R08、R15、P138、A318等玉米自交系不仅幼胚培养胚性愈伤组织诱导率很低，平均仅在3％左右，而且胚性愈伤组织绿苗发生数表现也很差，基本上没有分化成苗。

Have inferring such respects as overall design of system, the selecting type of the equipment, comprehensive wiring system of campus network, etc.

从实用的角度重点论述了校园网的系统总体设计、设备选型、综合布线系统等方面说明了校园网是一个系统工程。

As indicated by the result of empirical legal study of this Thesis, main strategy objectives Taiwan High-Tech Industry Companies intend to reach when selecting China Foreign-related Arbitration as dispute resolution mechanism are resolving international commercial disputes, controlling costs and risks, and enlarging the efficiency. It is concluded herein that the characters China Foreign-related Arbitration mechanism inhered could meet such strategy objectives and therefore, China Foreign-related Arbitration shall be the alternative dispute resolution to be recommended to Taiwan High-Tech Industry Companies.

实证研究显示，解决国际商事争议、成本及风险控制，以及效益最大化为台湾科技产业运用中国涉外仲裁机制解决国际商事争议之三大策略目标；而本文认为，中国涉外仲裁机制之特点，适足达成该等策略目标，而为可由台湾科技产业善加运用之中国替代争议解决机制。

This paper has mainly finished three research jobs based on existent research results:(1) Studied algorithm performance how effected by selecting parameters, taking TSP as an example, focusing on two parameters:(1)initialing solutions algorithms;(2) intensification and diversification strategy.

本文在现有研究成果的基础之上，主要做了三方面的工作：(1)以组合优化问题中的代表TSP为例，探讨了TS中算法参数的选择对搜索性能的影响，集中研究了两点：①初始解的生成算法；②集中性和多样性策略。

According to the existing problems transforming institutes of technological development type into enterprises, based on abundant investigation and summarizing the relative documents, the paper lodges three transformation types including independently transforming into enterprise, inosculating with other organization, and so on, for this kind of institutes' selecting, and puts forward nine corresponding transformation patterns of these types.

结合开发类科研院所企业化转制中存在的问题，通过大量的调研和对相关文献资料的总结，提出开发类科研院所实施企业化转制可供选择的独立企业化运营和与其它组织融合运营等三种转制类型，以及与之对应的九种转制模式；同时，详细比较研究了这些模式在转制实施方案、主要优缺点、适用条件和对转制科研院所要求等方面的主要区别。

This paper introduces the developing progress of metallic pressure sealing ring,including selecting material,drawing special forging process, intenerating process and drawing machining process.

介绍了具有优良使用性能，可替代进口产品的金属自密封环的研制，包括选材、制定特殊锻造工艺、制定机械加工工艺规程和软化处理等。

In selecting your intimates, you are perhaps to consider which party you most favor in the barons wars.

在挑选你亲爱的人时，也许要考虑在男爵们争斗中，你最倾向哪一边。

This is done by identifying work-force requirements inventorying the people available,and recruiting,selecting,placing,promoting,appraising,planning the careers of,compensating ,and training or otherwise development both candidates and current job-holders so that they can accomplish their tasks effectively and efficiently.

这是通过确定劳动力的要求清查的人士，可使用，并招募，选拔，安置，促进，评价，规划职业，补偿，培训或其他两位候选人的发展和当前的就业者，使他们能够完成他们的工作效率和成效。

First by confining and concentrating molecules, then by selecting and arranging those molecules, minerals may have jump-started the first self-replicating molecular systems.

矿物首先圈住分子加以浓缩，接下来是筛选并联结这些分子，因此也许便催化产生第一个有复制能力的分子系统。

According to the method, model dimension is contracted to five by the way of selecting the unit in which amount of I/K is m inimal. Then sensitivity of frequency to stiffness is calculated. After the diff erence between measured frequency and calculated frequency have been got, the ad justed amount of stiffness is calculated by the using of the sensitivity and the frequency difference.

该方法按照I/K最小优先合并原则，将轴系模型自由度数缩聚为5，分析该模型4个刚度对前4阶频率的敏感度，算出实测的前4阶频率和模型计算频率之间的差值，利用敏感度和频率差值计算出刚度的调整量。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐