饵

We show that a supercritical Hopf bifurcation will occur under some conditions by using the density dependent rate in immature prey population as bifurcation parameter. Sufficient conditions which guarantee the uniform persistence and global stability of boundary equilibrium are also obtained.

我们以幼年食饵个体之间的密度制约率作为分支变量得到在一定条件下将出现超临界Hopf分支，并得到了系统一致持续生存和边界平衡点全局渐近稳定的充分条件。

The model (1 - 1) researches the prey–preyer system with traditional II function:succeed in harvesting one( prey for food only having death rate), get the equilibrium of the system; To the equilibrium point, with the stability theories, analy the equilibrium stability; With keeping on the biggest development into target, get the biggest value of the target function.

模型(1 - 1)研究具有传统II类功能函数的Lotka -Volterra捕食-食饵系统：对捕食者进行单一捕获，得出非负平衡点；对平衡点，用稳定性理论，分析其局部稳定性；以最大可持续发展为目标，应用数分理论，得到目标函数的最大值。

In order to reach the systematic fishing production and management needed by marine ranching, the feeding system with remote monitoring was developed.

为满足海洋牧场中系统化渔业生产和管理的需要，研制一种可用于海洋牧场的远程监控投饵系统。

There are many factors to affect the surveillance of rodent such as the repellence of rodent to new substance, the lure of baits, the abundance of food, the sensitivity of surveillance facility and the layout of surveillance sites.

影响鼠密度监测结果的因素较多，可以分为以下几类：(1)监测器具对鼠的新物排斥反应；(2)食饵对鼠群的引诱力；(3)环境中食物的丰富度；(4)监测器具的灵敏度；(5)监测点的位置，另外还有些干扰因子。

Results The invalid areas surveyed by bait method accounted for 53%, suggesting that the inducement of sweet potato was very weak. Successful surveillance area accounted for 8% and 67% by trap method and powder-trace method, respectively, showing that the reason leading to the insensitivity of rodent to trap method was its strong repellence to new substance.

结果 食饵法监测失败的区域占53%，说明红薯的引诱力不强致使敏感度较低；鼠夹法、粉迹法成功监测的区域分别为8%和67%，说明鼠夹法敏感度较低的主要原因是鼠对鼠夹有较强的新物反应。

A crucial element of all models is the so-called "functional response", which is the function representing the prey consumption per unit time.

针对具体的数学模型，一个关键的因素即所谓的"功能反应函数"，它表示食饵的种群密度关于时间的变化率。

We just use it as a secondary color on the larger baits in these conditions.

我们只是把它当作是次要的彩色大饵这些条件。

Smallmouth bass fishing in canada We just use it as a secondary color on the larger baits in these conditions.

加拿大渔业smallmouth低音只是用它作为次要的彩色大饵这些条件。

Author's aestheticism, Hemingway was managed a traceless writing skill under the rigid discipline, he meticulously described character's behavior in his book, such as prepared for sailing, how to set the bait, how to deal with fish after it fell in to the trap, and eventually how to kill the fish and bind it at shipside, and the plot of whole fighting with the shark was inseparably closed and traceless.

作者的唯美主义，海明威在严格的训练中练就了不落痕迹的写作手法，他在小说中细致的描写了人物行动，诸如出海前的准备，出海后如何下饵，鱼上钩后如何跟它周旋，最后如何把它杀死绑在船边以及和一条条鲨鱼搏斗的整个过程都写的丝丝入扣，不露修饰痕迹。

But I'll never go into the wilderness, skewer a worm on a hook, reel in a fish

但是我永远也不会进入荒郊野地，在鱼钩上挂上虫饵，钓上一条鱼

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。