渐变群

You go from an ecocline to ecotone.

你会一下从生态渐变群[3]转到生态交错群[4]

At the early iteratives, the mutation rate is bigger and the aim is to make particles to explore smaller and isolate region and to avoid the algorithm trapping to the local optimum. While the algorithm runs, the mutation rate will be decreased to reduce the disturbing to the particles. IPSO adopts a new method that congregates some neighboring individuals to form multiple sub-populations in order to lead particles to explore new search space. Additionally, our algorithm incorporates a mechanism with a simple and easy penalty function based on the largest distance between the particle and the boundary of the feasible region to handle constraint.

IPSO采用了一种新型的变异策略，变异概率随着算法的运行是动态变化的：在算法运行初期，变异概率大，其目的是使算法不但能够探测到目标空间中的孤立区域，而且避免搜索陷入局部极值；在算法运行后期，变异概率逐渐变小，以减少对粒子的扰动；算法通过将部分具有邻近距离的粒子聚集成核形成多子群引导种群中粒子的飞行；采用一个简单的基于粒子与可行域边界最远距离的罚函数处理约束的机制，使得算法高效实现。

Idioms and its close kin, idiomatic expression,which is often labeled 'idiomatic collocations' or 'strong collocations'.

它们处于习语渐变群的中央，互为近邻，是Sinclair "习语原则"的主要实现者。

To date, the panmixia hypothesis has remained unchallenged: genetic studies realized on eel's mitochondrial DNA failed to detect any genetic structure; and a similar lack of structure was found using allozymes, with the exception of clinal variation imposed by selection.

到目前为止，随机交配假说尚未得到挑战：通过线粒体研究未发现鳗鲡存在遗传结构，而利用同工酶也得到缺乏遗传结构的相似观点，而因选择引起的渐变群变异是例外。

So chirped fiber gratings have broad reflection bandwidth. The group delay in chirped fiber grating reflection bandwidth changes gradually. These properties are what other type fiber gratings do not have.

所以chirped光纤光栅具有宽的反射带宽，在反射带宽内具有渐变的群时延等其它类型的光纤光栅所不具备的特点。

Callaham and Liddicoet found an elevational cline in ponderosa pine from Northern California.

卡拉汉和利狄柯特发现加利福尼亚北部产的黄松有一海拔渐变群。

The result revealed a lack of spatial structure of genetic variation among populations of C. parasitica indicating a fact that genetic variations of the most polymorphic loci were randomly distributed.

结果表明：中国栗疫病菌居群缺乏空间结构，绝大多数 RAPD位点变异为随机分布的空间模式，但部分位点表现出渐变、斑块和双向渐变的非随机分布模式，又显示了一定的空间结构。

Biologists call this kind of gradual variation over a certain geographic range a "cline" and interpret clines as strong indications that the variation is adaptive, a response to environmental differences.

生物学家将这种在特定地理区域范围内的逐渐变化称为&渐变群&，并针对渐变群解释说，它强烈地表明这种变化是适应性的，是对环境差异所作出的反应。

Biologists call this kind of gradual variation over a certain geographic range a "cline" and interpret clines as strong indications that the variation is adaptive, a response to environmental differences.

生物学家将這种在特定地理区域范围内的逐渐变化称为&渐变群&，并针对渐变群解释说，它强烈地表明這种变化是适应性的，是对环境差异所作出的反应。

This cline exists along a transect from the Sacramento Valley to near the crest of the Sierra Nevada Mountains.

这一渐变群是沿着萨克拉曼多谷地到西瓦内华达山脊的植被带存在的。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。