查询词典 predation

A species can become threatened or endangered because of a number of factors:"presentor threatened destruction, modification or curtailment of its habitat or range; over-utilization for commercial recreation, scientific, or educational purposes; disease or predation, the inadequacy of existing statutory mechanisms; or other natural or man-made factors affecting its continued existence."

一个物种会遭受威胁和面临危险时由多种因素造成的：现实的或充满威胁的破坏；改变或剥夺它们的栖息地，为了商业娱乐科研的或教育的目的而过度利用；在疾病或者遗传方面，现存法定机制的不完善；或其他影响其继续生存的自然或人为的原因。

The predation of dragonfly,Pantala flavescens Fabricius,on the alates of red imported fire ant,Solenopsis invicta Buren,was studied in Zhuhai,Guangdong Province.

报道了黄蜻对婚飞红火蚁的捕食作用。蜻蜓聚集在婚飞红火蚁的蚁巢上方捕食婚飞红火蚁，平均17只∕巢。

When these parameters surpass a certain value, the system cannot appear the limitcycle. Through the various parameters\' changing, it demonstrates the forming process of the dissipative structure. Thus it show the dissipative structure\'s characteristic of the trophodynamics predation model and point out the ecological significance of the various parameters in the model.On the fourth chapter, the spruce aphides and its predator model is a predator model.

第四章，以两个捕食者作用于同一食饵的竞争关系模型为例，应用微分方程定性理论，对捕食模型中存在极限环的情况进行了讨论，用MATLAB在相平面上模拟出系统的极限环，此时该体系状态的发展呈现周期振荡趋势，从而揭示出营养动力学为基础的捕食模型耗散结构特征。

Biomass of calanoids was low when fish predation was intensive, probably because their nauplii were more vulnerble.

在鱼类捕食压力较高的水体中哲水蚤的生物量较低，因为无节幼体较容易被鱼类所捕获。

In the absence of constraints on the state based on rule of law, there is a dilemma facing the state: when the state has the incentives to enforce contracts, it also has the incentives for predation.

在缺乏以法规条例为依据对国家实行限制的情形下，国家就会面临一种困境：国家在鼓励履行合同的同时，亦鼓励了掠夺。

The decrease in distribution and numbers of some species of native birds in New Zealand - the bell bird for example - has been attributed to disease rather than predation,所以答案为D.

根据短文得知，试图把多发粘液瘤病引进到新西兰以控制野兔的数量，这一计划失败了，主要是因为在该国没有昆虫传播这种病。

Simian3 and Shiyuan321 as control. It showed that both GK12 and SGK321 had no significant impacts on natural control efficacy of the biological and non-biological death factors of cotton aphids. Except for the factor of natural death and others, predation was the key factor affecting population dynamics of cotton aphid. Rain ranked the second, parasitism by insects and pathogens had weak control efficacy.

与常规棉相比，单，双价抗虫棉对天敌捕食和寄生，病原物，风雨等生物和非生物因素对棉蚜种群的自然控制作用均未产生显著影响；各因素中，除自然死亡及未知因素死亡外，天敌捕食对棉蚜自然种群的控制作用最强，风雨的作用次之，天敌寄生和病原物的作用则较弱。

Selective predation of predatory fish can largely reduce the abundance of adult copepods, but doesn't have much influence on species richness of copepods.

水库捕食性鱼类对甲壳浮游动物的选择性捕食，对桡足类种类影响较小，对桡足类成体密度影响较大。

Under this scenario, the long-term decline in bivalve mollusc larvae will reflect increased predation on the settled larvae and adults by benthic decapods.

据此软体动物幼体的长期减少反映了深海十足类对其幼体和成体的掠食。

The findings indicated that the Sichuan Hill Partridge might face the well-documented trade-off between food resource and predation risk when utilizing habitat.

四川山鹧鸪在利用栖息地时可能面对食物资源与天敌风险的权衡。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。