查询词典 niche

In the section on theoretical exploration of this thesis,thenature of niche and the particularities of plant niche are discussed indetail.

在理论研究方面，本文深入讨论了生态位的性质问题及植物生态位研究的特殊性问题。

Based on the side veins, distance between leaf base and breadth, leaves length, leaves breadth and leafstalk length, populations initially could be compartmentalized three different niche types. Based on the angle of foliage, it could be compartmentalized two niche types.

根据侧脉、基宽距、叶长、叶宽、叶柄长，可初步将各居群分别划分为三种不同的生态型，而根据叶基角，连香树可划分为两个生态型。

However, are you going to capture your niche market as well as if you practiced niche marketing?

不过，你怎么利基市场以及捕捉你，如果你搞营销利基？

If you have a site in a niche market, do your research and check out other sites in your niche.

如果你有一幅利基市场，你看看其他网站的研究和贵利基。

Two-dimensional scatter plot of principal axes analysis,systematic cluster tree and the minimal spanning tree on the basis of niche overlaps were drawn,which revealed the ecological similarity of 42 moss species.The combinative application of principal axes analysis,systematic cluster analysis and minimal spanning tree method on the basis of niche overlaps could express the ecological similarities among species intuitively.

以此为指标，分别应用主坐标排序、图论聚类及系统聚类分析方法，作出了反映42种地面藓类的种间生态关系的二维投影图、最小生成树和动态聚类图。3种方法相结合，能够对生态位重叠值矩阵进行直观地表达，并使所表达的藓类种间关系具有确切的生态学含义。

In this paper, a real-valued-coding niche genetic algorithm modifying the binary-coding niche genetic algorithm (Goldberg and Richardson, 1987) is developed for searching global minimum value of a multiple-peak function efficiently.

本文修改Goldberg 与 Richardson(1987)提出之二位元编码利基遗传演算法，发展一实数编码利基遗传演算法以搜寻多峰多谷函数之全域最小值。

NFC is a niche in a niche really, and it is probably fair to say that it is difficult to add to the quality without a significant addition to the cost, and seems to be most popular in Japan.

天然浓缩果汁是这类传统产品中的佼佼者，在日本最流行。公平地说，这类产品的品质与成本投入成正比。

The new Stretching-Niche PSO algorithm could resolve the disadvantage of standard Niche PSO that the local best of value depends on the number of sub-swarms and easily has the problem of iteration and pretermission.

该算法解决了标准的NichePSO算法在处理多峰函数时，极值点的个数依赖于子群体个数及极值点容易出现重复、遗漏等问题。

It reported for the first time the change between niche breadth and niche overlap of the three kinds of parasite, which are Acanthocephala, Digenea and Capillaria in the digest tube of Monopterus albus , and the relation with the intensity of infection correlation.

摘 要：为探明寄生虫对黄鳝的危害，对黄鳝消化道内三大类寄生虫棘头虫门、复殖吸虫纲和毛细线虫属的生态位宽度和生态位重叠随季节的变化及其与寄生虫感染强度的关系进行了研究。

This weed population had a wider niche breadth, the second widest among 12 major weed populations in weed community, and had bigger niche overlap with Stellaria alsine, Alopecurus acquallis, Malachium aquaticum, Poa annua, Polygonum persicaria and Lapsana apogonoides. In rape, wheat or fallow, B.

在杂草群落中，草的生态位宽度居第2位，说明其有潜在的较强的适应环境的能力；草与雀舌草、看麦娘、牛繁缕、早熟禾、春蓼和稻搓菜等杂草种群的生态位重叠较大，与它们的生态要求比较接近。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？