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The efficiency of molecular marker-assisted selection was investigated using two populations from pedigree selection and modified backcrossing pyramiding developed for the breeding purpose.

利用长江流域推广品种泗棉3号和优异纤维种质系7235为育种亲本，配置了系统育种和修饰回交聚合育种两套群体。

A mathematical model on the populations of field giant pandas and bamboos is studied.

研究了野外大熊猫与竹子种群的数学模型。

So level of random breading were high between different individuals in the populations.

种豚草的异交率分别为0.5123和0.6393，其种群内植株间随机交配程度较高。

In recent years, pictures of maimed children have threatened to overwhelm these traditional positive images, when rebel groups in Africa used diamonds to finance their wars and unspeakable brutalities against civilian populations.

近年来，儿童致残照片威胁压倒这些传统的正面形象，当叛乱集团在非洲钻石用来资助其不可告人的暴行和对平民的战争。

The Numbers of callusing in 4 weeks exhibited extensive variation from 16.7-100%, 18.3-100%, and 4 1.7-100% in local, cultivars and families populations, respectively.

在地方品种、栽培品种和新育成品系中，半愈期都表现了广泛的变异。最短的6天就达到半愈期，最长的直至4周的培养试验结柬，都没有达到半愈期。

Farmers turn into citizen is a procedure of reducing the farmers, knocking down the proportion of village populations, augmenting the citizens, thus it actually is the citifying at certain mean.

农民市民化就是农民转变为市民的过程，是减少农民，降低农村人口比重，增加城市人口的过程，因而，农民市民化在一定意义上就是城市化。

Some populations showed clumped distribution was due to the different conditions or the biological and ecological characteristics of their own.

各种群为争取更多的环境资源而随机分布在群落中，少数种群呈聚集分布则是由于生境的异质性或其本身的生物生态学特性引起的。

Background and Objective Helicobacter pylori, a microaerophilic, spiral and gram-negative bacillus is recognized as a human-specific gastric pathogen that colonizes the stomaches of at least half of the worlds populations.

背景和目的幽门螺杆菌(Helicobacter pylori，Hp)是微需氧的革兰阴性杆菌，呈螺旋状。

This paper proposes an Improved Particle Swarm Optimization algorithm.IPSO adopts a new mutation operator and a new method that congregates some neighboring individuals to form multiple sub-populations in order to lead particles to explore new search space.Additionally,this algorithm incorporates a mechanism with a simple and easy penalty function to handle constraint.Thus,this algorithm has strong global exploratory capability and efficiency while being applied to solve nonlinear constrained optimization problems.

提出了一种改进的粒子群算法（Improved Particle Swarm Optimization，IPSO），使用了一种新型的变异策略，并在搜索过程中将部分邻近的个体聚集成核，从而形成多子群引导粒子探测新的搜索区域，采用了简单易行的罚函数约束处理机制，使算法在求解较难的非线性约束优化问题时具有很强的全局搜索能力与效率。

The emergence of suburbanization is inevitable, along with the economy developing and populations congregating in metropolis, suburbanization has enormous demand, motive force and market potential.

郊区化的出现具有客观必然性，伴随着大都市经济发展和人口聚集，郊区化有着巨大的需求、动力与市场潜力。

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。