查询词典 biological population

Entomopathogenic fungi are the main biological factors of controlling pest population in nature, but its application was limited because of their poor performance in field.

昆虫病原真菌是自然界控制害虫种群的主要生物因子，其研究开发越来越受到重视。但由于存在致死速度慢、防效不稳定、对环境条件要求高等缺点，限制了昆虫病原真菌的应用。

In recent years, consolidation in the development of the medical profession, and strive to improve the quality of teaching at the same time, the additional population science, biological science, computer science, environmental science, foreign languages, materials science, and other non-medical professionals to make the College to maintain and carry forward Medicine, radiology, nursing, pharmacy characteristics at the same time, to the multi-disciplinary, comprehensive, modern and the University of direction.

近年来，在巩固发展医科专业，努力提高教学质量的同时，增设了人口科学、生物科学、计算机科学、环境科学、外语、材料科学等多个非医药专业，使学院在保持和发扬医学、放射、护理、药学特色的同时，向多学科、综合性、现代化大学方向发展。

Although theoretical principles have been proposed for designing the nature reserve based on the knowledge of island biological geography, population viability analysis and landscape ecology, they appear unsuitable in practice.

运用地理信息系统为工具，以盐城自然保护区为实例研究，针对当前自然保护区理论存在的设计规划方法的不足，提出了一套具有科学理论依据的操作性较强的保护区设计规划方法。

With the high sensitivity of biomarker assays,the exposure levels and its biological effect in population exposed to low level carcinogens for a long time can be more directly measured,and the dose-effect relationship between biomarkers and a specific risk can be more accurately descripted The study on biomarker,which still stayed in primary stage,presented good prospect in the field of risk assessment on environmental health In this review,data are summarized on the role of biomarkers that are used for...

利用生物标志物高灵敏的特性，可以直接测量人群长期低剂量的暴露水平及其效应水平，能够较准确地估计生物标志物水平与特定危险性之间的关系，这方面的研究尚属起步阶段，但在环境健康危险度评价中具有很好的发展前景。对生物标志物的选择，其在低剂量致癌物暴露危险度评价中的作用，评价方法或途径及存在的问题进行了总结。

The results showed that the population density and biological rhythm of the scale insect were contrasted with the content of VB2 and the VB2 content in the two pollution districts were significantly higher than that in the cleaning district.

结果证明，污染区国槐枝条和叶片的VB2含量极显著地高于清洁区；VB2的变化与虫口密度呈正相关关系，回归式为y=1507.76x-170.56，相关系数r=0.839。

Firstly, the effect of multiple ecological factors on biological characteristics of Arthrobacter population was nonsymmetrical in heavy metal tailing soil, and bacteria tend to regulate the INC relatively to IDC when facing the natural selective pressure.

种群在高浓度Pb选择条件下降低的遗传多样性表明它们在适应重金属污染时付出了进化代价，抗重金属在某种程度上也降低了菌株对干旱胁迫的耐受。

The biological analysis results showed: Population Doubling Time of cells was approximately 24 h;Diploid account for 76%～88% in cell's chromosome;By Isozyme analysis of Lactic Dehydrogenase,Malic Dehydrogenase,cross contamination had not taken place;The test results of ...

结果表明：细胞群体倍增时间约为24 h；细胞染色体中二倍体(2n=60)占主体，镜检细胞的百分比为98.2%；乳酸脱氢酶、苹果酸脱氢酶同工酶分析，没有其他物种污染；细菌、真菌、病毒、支原体检测阴性。

Results Primary RPCs extracted from the neural retina demonstrate certain biological characteristics: the cell population could form neurospheres and younger adherent cells expanded in clusters.

结果 从兔胚胎视网膜神经部分离出的原代视网膜前体细胞具有明显的生物学特性：所培养细胞可形成悬浮生长的细胞团，刚贴壁的细胞成簇状生长，这些细胞用免疫细胞化学染色神经上皮干细胞蛋白表达呈阳性。

This paper summarized the survey, collection, storage, research and utilization of forage germplasm resource; its current status, existing problems and suggestions about subsequent progress were discussed, including superior and rare germplasm collection, forage genetic diversity research, biotechnology utilization in forage germplasm innovation, duration of germplasm storage, natural evolution speed, storage techniques of short-life seeds, super gene exploration and function, biological base of species and population conservation.

为此，论述了我国牧草种质资源调查、收集、保存、研究和利用的现状，存在问题及对今后发展的建议，提出今后应加强优良和珍稀牧草种质的搜集、生态型及遗传多样性的研究和利用、生物技术在优良牧草种质创新的应用、种质保存的时效性和野生状态下牧草遗传变异与进化的速率、短寿命牧草种子保存技术、优良基因的发掘和功能研究以及利用平台的构建、物种或种群保护的生物学基础研究7个重点领域的研究。

Population control measures include biological warfare targeting food supply, as well as various methods of climate manipulation through Chemtrails spraying and implementation of the HAARP technology .

控制人口增长的措施，包括生物战针对粮食供应，以及各种方法的气候操纵通过chemtrails喷涂和实施本haarp技术。

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