查询词典 systematic sample

But systematic research concerning continuous mono-cropping grafted cucumber obstacle isn't reported. This paper systematically studied the effect of continuous cropping soil on grafted cucumber in aspect of its growth, yield and edaphon in pot experiments. Further more, root exudates of squash and grafted cucumber were collected by solution cultivate and adsorption of XAD-4 resins, and bioassay of the root exudates was did with cucumber and squash as receptors, studied allelopathy of grafted cucumber and squash root exudates on cucumber and squash , physiobiochemistry as well as.

本项研究采用盆栽试验以不同连作年限的土壤为基质比较系统地研究了连作年限对嫁接黄瓜的生长、产量和土壤微生物的影响；采用水培和XAD-4树脂吸附法分别收集嫁接黄瓜和砧木南瓜的根系分泌物并以黄瓜、南瓜为受体进行生物活性测定，并对嫁接黄瓜及其砧木南瓜根系分泌物化感作用的生理机制进行了初步探索。

Jonathan Culler makes a systematic study on literary institution, especially focusing on the institutionalization of American universities, its shifts, and their impact on literary study.

乔纳森卡勒就是较早对此问题给予关注的重要学者之一，他主要考察了大学体制的变化对文学研究的影响，也论述了其它的文学体制性因素在文学研究中的重要性。

No country in the world has any systematic legal system of liability of culpa in contrahendo.

各国均没有体系化的缔约过失责任制度，特别是大陆法系国家，缔约过失责任制度不能融入传统的民事责任体系，导致合同责任与侵权责任界限模糊。

It is understood that the July to September this year, the State Council Development Research Center, enterprises, Real Estate Institute of Tsinghua University and China Index Research Institute jointly organized the three research institutions,"Chinese real estate TOP10 Research Group" set up a special group to 2003, built or under construction building complexes for the systematic study China's major objective is to reflect the current urban icon complex situation and the overall level of development.

据了解，今年7月至9月，由国务院发展研究中心企业所、清华大学房地产研究所和中国指数研究院三家研究机构共同组建的"中国房地产TOP10研究组"成立专项课题组，对2003年以来建成或在建的建筑综合体进行了系统性研究，旨在客观反映当前中国各大中城市新地标建筑综合体的整体状况和发展水平。

In brief, systematic analysis and research on the difficult form-finding problem and cutting pattern problem in tension structures design and construction are given in this thesis. Practical computation method and theory are presented.

综上，本文对张拉结构在设计和施工中的难题——形状确定问题和裁剪问题，进行了系统的分析研究，提出了实用的计算方法和理论。

To achieve this, we first have to clarify the connotation of cyberculture, and have a systematic grasp of the features of cyberculture, and make an all-round revelation of positive and negative effects of cyberculture on college students, and seek new approach of ideological and political education.

为此，需要理清网络文化的内涵，系统把握网络文化的特征，全面透视网络文化对大学生正负两方面的影响，积极探寻网络文化下大学生思想政治教育的新路径。

A systematic and pharmacognostical study on five species of Datura in China.

Title 五种曼陀罗的植物分类及中药鉴定研究。

The systematic debilitation of their parties benefits the army, which has entrenched itself in the economic as well as the political system.

这两个政党存在的这种体系的不足放任了军队的扩张，使他们己进入到经济和政治领域。

A systematic analysis of the various combinations of the hexagonal, boat, and pentagonal star in the crystalline approximants of decagonal quasicrystal has been made. This was compared with the structural subunits in some approximants observed by high-resolution electron microscopy.

系统地分析了二维十重准晶的近似晶体相中六角、船形和五角星等结构块的不同排列组合，并与我们已用高分辨电子显微镜观察到的一些近似相中的结构单元进行了比较。

Draw lessons from increment type observation implement with PI condition observation implement research achievement, combine heat to dominate a field complex control system designs bunchy form normally the actual condition of regulating system, offer observation of function of PI of increment style broad sense implement and the concept that its condition feedbacks, the tectonic regulating system that cluster form and observation implement feedback of shirt-sleeve broad sense condition controls a system, learn an analysis through number, give out the sufficient condition of IFO-PIO/BS reachs his corresponding theorem and deductive proof, announce give this to controlled systematic equivalence to be had at IFO-PIO/BS change the function that gain condition feedbacks.

借鉴增量式观测器和PI状态观测器的探究成果，并结合热控领域复杂控制系统通常设计成串级调节系统的实际情况，提出增量式广义PI函数观测器及其状态反馈的概念，构造串级调节系统和观测器相融合的广义状态反馈控制系统，通过数学分析，给出IFO-PIO/BS的充分条件及其相应定理和推论的证实，揭示出该控制系统等价于IFO-PIO/BS具有了变增益状态反馈的功能。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。