查询词典 preys

This paper consists of three parts: Firstly, we discuss a nonautonomous -species two-patches cooperative Lotka-Volterra diffusion system. Using Brouwer fixed-point theory and Liapunov function, under some conditions, we obtain that the system has a unique globally asymptotically stable positive periodic solution. Secondly, we consider a kind of nonautonomous predator-prey model, in which preys are with stage structure and the predator are with two patches.

中文摘要：本文分三部分讨论三类生态模型周期解或概周期解的存在性及全局渐近稳定性等内容：第一部分讨论了两斑块种群的互惠Lotka-Volterra扩散系统，运用不动点理论和构造Liapunov函数，得到了系统存在唯一一个全局渐近稳定的正周期解的充分条件。

In the animal world, the predators and their preys battle for life or death within the food chain. As for us human beings, we have a lot more to do in many others fields. Therefore, the room for tolerance and courtesy is much larger. People can coexist in peace as long as no one challenges another's limit. Those who bestride others' life and infringe their interests will certainly be punished because they are not supposed to act like bullying beasts.

动物界主要是为了果腹而激战，人类因为有更多的事情要做所以活动的范围更广、目标更多，彼此容忍和谦让的空间就大很多，只要不是超越了底限都是可以和平共处的，而那些无故挑战他人底限的人便被绳之以法，因为他们无权拥有野兽那样的行动理由。

6KHz. Myotis frater preys on middle-sized insects on the ground in complex circumstances such as forest, and etc.

长尾鼠耳蝠在森林等复杂环境中捕食地面上中等大小的昆虫。

The fire that on my bosom preys Is lone as some volcanic isle; No torch is kindled at its blaze— A funeral pile!

积聚我胸腔的烈火好似孤独的火山岛；烈焰点燃的并非火炬—而是一个火葬柴堆！

The time and frequency of the polecat searching different preys and burrows were nearly the same. The polecat attacked virtually all prey offered and thus exhibited opportunistic foraging behaviour. However, it did not captured all prey with equal sequence. It first captured the zokor, then the pika and last for the root vole. In addition to using the typical musteline killing method of biting the nape of the neck, the polecat evolved a variety of killing methods suited to a range of prey types depending on the activity, size and anti-predation ability of prey. The zokor was bitten on the head, whereas the pika was killed by bites to the head or throat and the root vole was killed by bites to the head or chest. The time polecats pursued the root vole was the longest, followed by that used in pursuing the pika and the zokor.

实验结果表明：艾虎对三种猎物的搜寻时间和搜寻频次基本一致，在搜寻猎物的过程中并非已知洞道系统中所存在的食物信息，是一种机会主义的捕食者；艾虎除了具有典型鼬科动物捕杀猎物的方法外，能够根据猎物的大小、活动性和反捕食能力采用不同的捕杀方法，在捕杀猎物的过程中首先捕杀高原鼢鼠，其致死部位全部为头部，其次捕杀高原鼠兔，其致死部位除了头部外，明显增加了颈部的比例，最后捕杀根田鼠，其致死部位主要是头部和胸部；艾虎在捕杀猎物的过程中，追击根田鼠的时间最多，追击鼢鼠的时间最少，而用于捕杀根田鼠的时间最少，用于捕杀鼢鼠的时间最多，艾虎捕杀高原鼠兔后单位时间内获得的能量值最大，其次为捕杀高原鼢鼠，而捕杀根田鼠后单位时间内活动的能量值最小。

One who preys on others; a plunderer.

抢劫者劫持他人的人；劫掠者

Prey selection and foraging behaviour of the steppe polecat Mustela eversmanni were investigated with plateau zokors Myospalax baileyi, plateau pikas Ochotona curzoniae and root voles Mirotus oeconomus offered as preys for paired comparisons in the laboratory.

在室内条件下，将高原鼢鼠、高原鼠兔和根田鼠作为艾虎的猎物选择对象，研究艾虎对猎物的选择性及艾虎捕杀猎物的行为时间分配。

She has stifled me, she thought, she preys upon me, I am treated as her child, her toy, her pussy-cat, she has humiliated me and fed off my dependence and the fact that I have always been so sensitive.

她想，她窒息了我，她折磨我，她把我当成她的孩子，她的玩具，她的小猫，她让我丢脸，是她使我这么依赖她，让我一直都这么敏感。

Seven star 瓢 insects, small red 瓢 insects and different color 瓢 all of insects are the useful insects which preys for food aphid and scale insect.

七星瓢虫、小红瓢虫和异色瓢虫都是捕食蚜虫和介壳虫的益虫。

The lust of the flesh preys on our physical appetites and their gratifications in this world. The lust of the eyes appeals to self-interest and tests the Word of God. The pride of life stresses self-promotion and self-exaltation.

肉体情欲的猎物是我们的生理欲望及这些欲望从世界中获得的满足；眼目的情欲借一己私利发威，试验神的话语；今生的骄傲看重自我抬升、自我高举。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。