查询词典 a cluster of

Though CopRS/CopABCD homologues are found to exist in Pseudomonas fluorescens, the potential role of this system in P. fluorescens has not been investigated. In this study a genetic cluster, consisting of copR, S, C, and D but lacking copAB, was identified in a pathogenic P.

CopRS/CopABCD是细菌用以维持铜内环境稳定的一个系统，虽然已在荧光假单胞菌中发现了CopRS/CopABCD系统的同源物，但其潜在的功能还未知。

Methods A randomized cluster sampling was performed to obtain a representative sample of population in Xinjiang Hefeng pastoral area.Blood wag taken from 632 individuals aged 30 and older for measurements of total cholesterol,triglyceride,hish density lipoprotein cholesterolby automatic biochemieal analyzer.The serum levels of low density lipoprotein cholesterolwas calculated according to the formula.

采用整群随机抽样的方法选取新疆和丰县牧区年龄≥30岁的牧民632人为调查对象，其中哈萨克族325人，蒙古族307人；抽取空腹12 h静脉m 3ml，采用日立7600全自动生化分析仪测定血浆总胆固醇、甘油三酯、高密度脂蛋白胆固醇的浓度，并根据公式计算出LDL-C的浓度，对资料进行汇总，并采用t检验、方差分析或协方差分析的方法观察两民族间血浆LDL-C水平的差异，并进一步采用多元逐步同归分析的统计方法研究其影响因素。

In addition, a pre-column derivatization HPLC method was applied to the determination of Astragaloside Ⅳ; the flavonoids was determined by full-range HPLC scanning; a colorimetric method was developed for the determination of flavonoids and saponins. Hierarchical cluster analysis was performed on three constituents of different Radix Astragali species, and its result was compared with those of traditional phytoecological identification and the pharmacological quality assessment.

本研究以比色法测定了黄芪中总皂苷的含量，以柱前衍生化高效液相色谱法测定了黄芪中黄芪甲苷的含量；以比色法测定了黄芪中总黄酮成分的含量，以反相高效液相色谱法测定了黄芪中毛蕊异黄酮和毛蕊异黄酮苷的含量；以黄芪中的黄芪甲苷、毛蕊异黄酮和毛蕊异黄酮苷为主要特征对不同品种的黄芪进行了系统聚类分析，并将聚类结果与传统生药学鉴定和药理质量评价结果进行了比较。

A systematic study was made on the induction of callus from terminal bud, cotyledon, plumular axis and the regenerated plantlets from terminal bud in Camptotheca acuminata Decne, and a large number of calli and cluster buds were obtained.

系统研究了以喜树顶芽、子叶、胚轴为外植体诱导愈伤组织的培养方法和以顶芽为外植体快速繁殖喜树的方法，获得了大量的愈伤组织和丛生芽。

MethodsA total of 634 children from a junior school in Jinan were sampled by cluster sampling method and assessed with The Rutter Scale for Parents and a self-designed questionnaire.

儿童行为问题是指儿童期出现的、在严重程度和持续时间上都超过了相应年龄所允许的正常范围的异常行为[1]。

Methods a stratifies cluster sample of three hundred and nineteen students was surveyed in a university in guizhou using an anonymous questionnaire.

采用分层整群抽样抽取贵州某高校大二、大四少数民族大学生319名进行无记名问卷调查。

Regions can provide a subsidized center that focuses on the needs of a specific industry cluster.

区域能提供把重心集中在特定工业群的需要的资助的中心。

Mio bronze creative art design gift has more than 2000 species, known as "the Kingdom of the Chinese bronze art gifts," Mio Bronze Art gift card for its exquisite original design, exquisite quality of the art, rich culture, good marketing services, licensing of the formation of the Yu Guan Gong Guan Gong statue hometown, famous masterpieces gifts, Lunar New Year gifts, ceremony of Extreme States, seal gifts, antique bronze gifts, special gifts, such as cluster eight bronze art gifts, including presented to the International Olympic Committee to participate in the Heads of State of the Beijing 2008 Olympic Games a special gift "Fire Phoenix", and commissioned by the National Tourism Administration as a national four-or five-star hotels the production of high-grade signs, produced by the Ministry of Water Resources for the state water system national model workers prizes, gifts woo Group to more than 100 species of annual rate of innovation both at home and abroad led the trend of bronze art gifts.

宇达创意设计制作的青铜艺术礼品已拥有二千余种，号称&中国青铜艺术礼品王国&，宇达牌青铜艺术礼品以其精美的原创造型，精湛的技艺质量、丰富的文化内涵、优良的营销服务享誉海内外，形成了宇达牌关公故里关公铜像、名家名作礼品、生肖礼品、至尊国礼、印章礼品、仿古青铜礼品、专用礼品等八大类青铜艺术礼品集群，其中有国际奥组委赠送给参加北京2008奥运会各国元首的专用礼品《火凤凰》、有受国家旅游局委托为全国四、五星级酒店制作的高档标志牌，为国家水利部制作的全国水利系统劳动模范奖品，宇达集团的礼品以每年100余种的创新速度引领着国内外青铜艺术礼品的潮流。

Cycloid cluster is a new concept presented in this paper, which is a set ofcycloids. To process the back-angle accurately and efficiently, the parameters ofcycloid are adjusted to make the envelope curve of cycloid approximate involute .

使用摆线簇包络线逼近渐开线是本文提出的一种新方法，摆线簇就是一组摆线，通过调整摆线簇中每条摆线的参数，可以使摆线簇中摆线包络线高精度的逼近渐开线，进而实现倒锥的加工。

A lateral division or subdivision of certain other plant parts, such as a root or flower cluster.

分枝某些其他植物部分，如根或花簇的侧向分枝或次级细分

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。