查询词典 levin

This special material 6YC-1, A4 steel, Stellite Levin, carbide, etc..

这种特殊材料有6YC－1、A4钢、司太莱、硬质合金等。

One day, Levin visits Dolly, who eagerly broaches the subject of Kitty.

有一天，文访问多莉，谁热切刀问题的小鹰号。

"Teenagers are not easy to manage," Dr. Levin commiserates, but his advice to parents is simple: Try where possible to dissuade your teen from getting a piercing.

&青少年是不容易管理，&博士李文commiserates ，但他的意见，向家长很简单：尝试尽可能劝阻您的青少年从获得穿孔。

Rick Levin: Well they're very different. The level of emotional involvement is greater with your children. When I was teaching full-time I got very close to a number of students, I counselled them in ways beyond the classroom.

理查德·莱温：这两件事非常不同，和孩子在一起的时候有非常多的感情投入，虽然在我全职任教的时候我和一些学生的关系也很紧密，我的指导也并不仅限于课堂。

Mr. Levin said disbanding the Iraqi army after the invasion was a mistake, and there was a lack of long-term planning.

列文说，在进攻伊拉克以后解散伊拉克军队是一个错误，而且缺乏对伊拉克的长远计划。

Quality win the trust of customers and the technology to win the customer's confidence in order to win customer satisfaction with the Service in order to win the room sincere goodwill" are all the letters Levin Tongren goals;"high efficiency, high quality, in order to process in order to survive, to the credibility of and development is the entire three-dimensional concept of Constant Tongren record purposes, I believe only a solid foundation can overflew progress.

以品质赢得客户的信赖，以技术赢得客户的信心，以服务赢得客户满意，以诚心赢得客房好感&是全体莱信同仁的奋斗目标；&高效益，高品质，以工艺求生存，以信誉求发展是全体三维恒创同仁的理念宗旨，相信只有扎实的基础才有飞越的进步。

Jinqiao lines owned禹洲Jinqiao International, Takahashi Metro, green Wei Lian apartments, Citylink New Garden, gold and not the future; Jiading Green Line collection golden world, Xin Yuan Metown, Levin British gun, Paul Phoenix on the Mayflower, Ma Lu Clear Water Bay , on Jun嘉苑; Baoshan line collection四季花城Vanke, platinum Dahua Washington, Grand Central, Central 1, Xiang Yi Bay, elite Kungkuan; Yangpu Line includes Powerise Square, China Resources Land Oak Bay, Metro Royal, an apartment, such as golf Hesheng.

金桥线拥有禹洲金桥国际、高桥新城、绿地崴廉公寓、连城新苑、金地未未来；嘉定线集合金地格林世界、鑫苑Metown、莱英郡、保利海上五月花、马陆清水湾、上隽嘉苑；宝山线集合万科四季花城、大华铂金华府、大华中环1号、香逸湾、菁英公馆；杨浦线包括了创智坊、华润置地。橡树湾、新城御景、合生高尔夫公寓等。

To make a comprehensive view of metapopulation researches, we folly analyze and summarize the present concepts, theories and models of metapopulation in this paper, which primarily includes the dynamical models and simulation approaches of single and competitive metapopulations. Based on the Levin's patch occupant model, the center framework of metapopulation researches, primary principles and mechanisms are discussed. First, Levins rule: the fraction of empty patch will remain constant with habitat destruction as long as metapopulation survives. This rule implies that empty patches have determinant effects on persistence and conservation. Second. Allee effect of metapopulation is incurred by establishing difficulties and dispersal costs, which is important to the studies of reserve area and the minimum available metapopulation size. Third, we analyze the rescue effect that immigrants can reduce the extinction risk of the presented local population. Rescue effect can leads to the improvement of metapopulation sustainability and the decrease of fraction of empty patches. Fourth, the coexistence mechanism of two competing metapopulation is discussed, which suggests that competition-colonization trade off may be prevalent in competing systems. Finally, extinction debt ob tamed from coexistence mechanism is given, which depicts the lost of species richness in the future for the current habitat destruction. After theoretical discussion, we present two popular simulated approaches in metapopulations: probability transition model and stochastic process model.

为了能总观集合种群进展的全局并开展进一步的工作，首先对集合种群的已有概念、理论和模型做了全面的分析和总结；其次对集合种群的发展和概念进行了探讨，以集合种群模型的中心框架：Levins的斑块占据模型为基础，展开对其它原理、效应和机制的探讨；主要包括了Levins原理，即当生境进到破坏时，空斑块比例在集合种群灭绝前保持不变，然后还分析了Allee效应（集合种群的Allee效应主要是由于建群困难和扩散损失造成的）；第三，分析了援救效应：迁人个体可以降低斑块中现有局域种群的灭绝风险，援救效应会增强集合种群的生存力，使空斑块比例下降第四，探讨了两竞争集合种群的共存机制，即竞争－侵占妥协，其共存机制为空间生境中物种共存提供了有力的理论解释。

Therefore, the use of milk-fed infants, should be increased by high calcium and phosphorus less food, such as green leafy vegetables or Levin mud soup, applesauce, eggs and so on.

所以用牛奶喂养的婴儿，应增加含钙高而含磷少的食物，如绿叶蔬菜汤或莱泥、苹果泥、蛋类等。

Levin wild mountain fern is listed as a tribute in history.

山地野生蕨莱在历史上被列为贡品。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失