多周期的

Consider the success of Cycle 1, 2, 3, 4 Pet Foods, or Burger King's Have it Your Way.

"考虑成功周期1，2，3，4宠物食品，或汉堡大王"多你的方式

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通过上述几个方面的研究，主要得出以下15条结论：(1)生态位构建可使空间结构种群，甚至是在没有杂合子优势的条件下，形成多种可能的稳定基因型分布模式；(2)随着环境的破坏与恶化，种群的生态位构建作用加速其较早形成稳定多态以阻碍环境对种群的不利影响，解释了有机体在不利环境下的一种生活史对策；(3)生态位构建作用通过基因型—环境反馈机制及有限的基因交流导致基因型多态的稳定共存；(4)有机体的生态位构建作用是一种积极的动力改变环境进而改变其自然选择的方向；(5)生态位构建的时滞作用对集合种群动态和空间分布产生深刻影响；(6)集合种群大小在时滞的崭新效应和等权重效应下达到一固定值，而在首位效应下达到统计稳定，表明首位效应的影响最显著；(7)首位效应下生态位构建相对权重的增量和时滞的长度是影响系统不稳定性动态的关键因素；(8)适中的生态位构建强度有利于集合种群的续存；(9)生态位宽度变窄会减少集合种群的数量从而增加其灭绝风险；(10)时滞和生态位构建的双重作用使系统产生周期振荡，并在异质性环境中产生稳定的螺旋波，破碎的螺旋波和环形波三种分布模式；(11)集合种群与资源含量的空间分布因为相滞而互补；(12)具有生态位构建的集合种群续存不仅取决于侵占率与灭绝率之间的平衡，而且依赖于生态位构建能力同其生境的自然消耗速率之间的妥协；(13)当生境中适合侵占的斑块比例小于其侵占率与灭绝率之比时，生态位构建作用促使集合种群在一定条件下续存：(14)生境斑块的状态从不适合到适合转变过程中存在生态位构建强度和系统初始条件这两个阈值；(15)集合种群的大小同正生态位构建能力正相关，意味着对环境具有较强正作用的有机体对维持有效生境起积极作用。

The book is divided into 14 chapters, including Introduction, continuous control system theory, process and discrete sampling, Z transform, sampled-data systems, discrete approximation of continuous system the equivalent, based on mathematical transform the classical design method, based on state space pole placement design methodology, multi-variable system of quadratic optimal control, quantitative effects, the choice of sampling period, the digital control system modeling, digital control system for a variety of design methods, variables quadratic optimal control systems, sampling cycle of selection, non-linear control of the problem, as well as digital control system, a typical application - Disk drive servo control design.

全书共分14章，内容包括概论、连续控制系统理论、采样过程和离散化、Z变换、采样数据系统、连续系统的近似离散等效、基于数学变换的经典设计方法、基于状态空间的极点配置设计方法、多变量系统的二次型最优控制、量化效应、采样周期的选择、数字控制系统的建模问题、数字控制系统的各种设计方法、变量系统的二次型最优控制、采样周期的选择、非线性控制的有关问题，以及数字控制系统的一个典型应用——磁盘驱动器的伺服控制设计等。

The method using periwinkle cells to cultivate and produce vindoline can stably realize the industrialized production of vindoline, and the production cost is rather low, the culture period is short, and the production is insusceptible to the natural environment and weather, so the year-round production can be realized.

本发明的方法用长春花细胞培养生产文多灵，可稳定地实现文多灵的工业化生产，并且其生产成本较低，培养周期短，不受自然环境以及气候的影响，可以实现周年生产。

The intersex development can be divided into three periods:early,middle and late period.

黄鳝的雄性性成熟发育也可以划分为六个时期，雄性发育为多周期类型。

Like corn, beans too see the states furthest behind in the Eastern Belt. As you know, the warmer and drier forecast this week broke July beans from a Friday high of 11.50 to a Sunday night low of 11.13 before a long term wet forecast had them back in buying pushing 11.70 into mid-session. The fear here is since corn is planted first due to its longer growing cycle farmers are rushed to get all or most of this corn in this week while it is dry.

像玉米一样，如你们所知道的一样，本周温暖干燥的天气预告使得7月大豆从星期五的高点11.50跌到11.13，然后在长期潮湿多雨的天气预报后在买盘的推动下涨到11.70，这里可担心的是由于玉米比较长的生长周期，农民忙着在本周天气干燥的时候种植尽可能多的玉米。

A memory device includes: a generator system having a number of generators that supply voltage or current to the memory device, a controller that supplies to the generator system a state control signal that commands the generators to be in an active state or a standby state, and a self-refresh oscillator that generates a self-refresh clock signal having a period suitable to refresh memory cells of the memory device.

存储装置包括：具有多个发生器的发生器系统，所述多个发生器被配置来给所述存储装置提供电压或电流；给所述发生器系统提供状态控制信号的控制器，所述状态控制信号命令所述发生器处于激活状态或备用状态；以及自刷新振荡器，该自刷新振荡器生成具有适于刷新所述存储装置的存储单元的周期的自刷新时钟信号。

It supports the scheduling of multicycle and chained operations, functional pipelines, etc.

它支持多周期操作与链式操作到非流水线功能部件与流水线功能部件的调度。

This capability can also be applied to single piece plungers to lift more liquid during the 'afterflow' period of the production cycle.

这一功能也可应用于单片式活塞，在生产周期的&续流&阶段期可提升举升更多液体。

Company has deliberately pursuing a "multi-client, multi-species, high-quality, short-cycle" of the operating characteristics.

公司刻意追求&多客户、多品种、高质量、短周期&的经营特色。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了