饵

As when a Vultur on Imaus bred, Whose snowie ridge the roving Tartar bounds, Dislodging from a Region scarce of prey To gorge the flesh of Lambs or yeanling Kids On Hills where Flocks are fed, flies toward the Springs [ 435 ] Of Ganges or Hydaspes, Indian streams; But in his way lights on the barren Plaines Of Sericana, where Chineses drive With Sails and Wind thir canie Waggons light: So on this windie Sea of Land, the Fiend [ 440 ] Walk'd up and down alone bent on his prey, Alone, for other Creature in this place Living or liveless to be found was none, None yet, but store hereafter from the earth Up hither like Aereal vapours flew [ 445 ] Of all things transitorie and vain, when Sin With vanity had filld the works of men: Both all things vain, and all who in vain things Built thir fond hopes of Glorie or lasting fame, Or happiness in this or th' other life; [ 450 ] All who have thir reward on Earth, the fruits Of painful Superstition and blind Zeal, Naught seeking but the praise of men, here find Fit retribution, emptie as thir deeds; All th' unaccomplisht works of Natures hand, [ 455 ] Abortive, monstrous, or unkindly mixt, Dissolvd on earth, fleet hither, and in vain, Till final dissolution, wander here, Not in the neighbouring Moon, as some have dreamd; Those argent Fields more likely habitants, [ 460 ] Translated Saints, or middle Spirits hold Betwixt th' Angelical and Human kinde: Hither of ill-joynd Sons and Daughters born First from the ancient World those Giants came With many a vain exploit, though then renownd: [ 465 ] The builders next of Babel on the Plain Of Sennaar, and still with vain designe New Babels, had they wherewithall, would build

好像一只伊马乌斯山上生长的秃鹫，在雪岭环绕着鞑靼人流浪的地方，食饵的缺乏迫使他们到放牧羊群的诸小山上去，吃饱了羊羔的肉之后，飞向印度恒河或印度河的发源地；途中降落在丝利刻奈的荒野，那儿的中国人用风帆驾驶藤的轻车。魔王如同这鸷禽，独自徘徊在如海洋一样多风的大地上，寻觅食饵。他真觉孤单，因为那里还找不到其他生物，无论是活，是死；只是后来，罪恶用虚荣填满了人的事业，才从地上升起一切虚无缥缈的东西，像飘浮的气体一般升腾到那里：包括一切虚幻的东西，以及所有人，那些把他们的光荣希望、不朽声名、今生来世的幸福都建筑在虚无缥缈上的人们。有些人在今世得了报应，即可悲的迷信和盲目的狂热追求所结的果实，只追求凡人的称赞，和他们的空虚行为相称的酬报，空虚。自然所未完成的工程，流产的、畸形的、乱七八糟混杂在一块儿，在地上消灭了，都飞到这里来，在这里徒然彷徨，直到最后破灭；有些人把梦想寄托在邻近的月球上，那同样是荒谬的。在那银色的世界里，有各种各样的类族：近乎真实的居民，超升的圣者，介乎天使和人类之间的中性精灵；神的众子和人间女子所生的巨人族，首先从古代世界来，当时很出名，还带来了许多空幻的功业。其次是示拿平原上巴别塔的建筑者，他们还有虚空的计划，要是材料有余的话，还要建筑些新的巴别塔。

In this paper, a non-autonomous predator-prey system with two commensal predators and one prey is studied.

研究了非自治的捕食者－食饵模型。该系统是两个具有互惠关系的捕食者种群捕食一个食饵种群。

This paper includes four chapters,the first part is an introduction,the second part is concerned with the state of construct and improvement about the predator-prey sys-tem,the third part is concerned with the state of research about the predator-prey system. Some new directions of predator-prey system are introduced in brief in the fourth part.

本文共分四部分：第一部分是引言；第二部分介绍了捕食者-食饵系统的建立和发展现状；第三部分系统的阐述了捕食者-食饵系统的研究情况；第四部介绍了捕食系统的一些其它的研究方向。

A predator model with refuge and toxicity is studied. By constructing a suitable Dulac function, it is shown that there is no limit cycle in the first quadrant, thus the globally stability of the equilibrium is proved. Further more, the paper analyzes the influence of refuge, toxicity and harvesting. It is amazing that ① if the death rate of predator is big or the harvesting effort is big, the existence of the predator is unrelated with refuge; if the death rate of predator and the harvesting effort are small, and the refuge is small enough, the population of both species is increased as the increase of refuge;② if d2=0, the increase of d1 has no influence on the prey population, while the population of predator is decreased.

研究一类有避难所、毒素作用和外界捕获影响的捕食系统，通过构造恰当的Dulac函数，证明系统在第一象限没有极限环，从而证明了平衡点的全局稳定性；分析了避难所、毒素、捕获作用对该系统最终种群数量的影响，发现：①当捕食者的死亡率大或其被捕获得多时，两种群的绝灭与避难所的存在无关；当捕食者的死亡率小、被捕获得多且避难所足够小时，随着食饵避难所的增加，捕食者种群数量也随之增加；②当毒素d2=0时，毒素d1的增加对食饵种群最终数量没有影响，而使捕食者种群数量下降。

Although five lines were in the water, five of the six fish were caught on one pole, the fish preferring its purple jig.

虽然我们放了五条饵，有一钓竿钓了五条，鱼似乎比较喜欢紫色的饵。

Our main porducts include soft bait,octopus,spinner,spoon,spinner bait,fishing rig,fishing kit,lead sinker,lead fish,lure kit/tackle box,and so on.

主要有软饵、章鱼、铁片饵、仕挂、套装杆、铅鱼、铅坠、鱼饵套装盒等十大系列产品。

Those analysis have shown that the nutritional quality of producer can impact the living rate of grazer and even lead to extinction , and grazer-producer interactions can shift from a type to an unusual class.

已研究的成果表明，食饵的营养质量会影响到捕食者的生长率甚至会导致种群灭绝，而食饵-捕食者之间的关系也由传统的型转化为型。

The results showed that: the influence of the aquaculture process on aquaculture water determined by type of aquaculture; the influence of aquaculture process on the water temperature, salinity and pH value were not wide.the descent of pH value was related to feed coefficients ; the dissolve oxygen of water in outfall was lower than the water in infall,but the concentration still maintained at the saturation level, is mainly affected by density of aquaculture ,rate of feed and artificial measures of increasing oxygen ;the major form of inorganic nitrogen was nitrate-N;the concentration of inorganic nitrogen and the organic matter tended to increase ,but the ammonium to decline ,this was relation with density of aquaculture ,rate of feed and variation of the different inorganic nitrogen form ; concentration of phosphate-P was low in outfall of pond , related with phosphate-P precipitating, as flowing water speed slowly in outfall;This phenomenon that the total number of bacteria and coli form group of water in outfall was lower than the water in infall , this caused by measures of sterilization and disinfection .

结果表明：养殖过程对水体影响与养殖类型有关。养殖过程对水体的水温、盐度和pH影响不大； pH下降与饲料系数高有关；溶解氧含量排水口比进水口低，但仍维持在饱和状态，与养殖密度、投饵率和人工增氧有关。硝酸氮是无机氮的主要存在形式，无机氮和有机物含量有升高趋势，氨氮有下降的趋势，与养殖密度，投饵率和各种无机氮之间的相互转换有关。活性磷酸盐含量在排水口含量下降，与排水口流水速度慢，磷酸盐沉淀有关。生物指标细菌总数和大肠杆菌总数在排水口比进水口低现象普遍存在，这与养殖场杀菌消毒等措施有关。

Considering a predator-prey system with a kind functional reaction in which the predator species have no density restriction,no fishing,while the prey species have nonlinear density restriction and the constant invest.

考虑捕食者无密度制约、无捕捞，而食饵具有非线性密度制约和常投放率的一类功能性反应的食饵捕食系统，对其进行了定性分析，证明了在不稳定的正平衡点附近存在唯一的极限环。

The purpose of chapter 4 is to study a predator-prey model with sublinear functional response function and sublinear density control function. Some results dealing with stability of equilibrium, nonexistence , existence as well as uniqueness of the limit cycle around the positive equilibrium of the model are obtained.

第4章分析了一类食饵的相对增长率和功能反应函数均为次线性函数的食饵-捕食者模型，通过分析，得到了该系统的正平衡点全局稳定和存在惟一极限环的充分条件。

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。