英语人>网络例句>多群 相关的搜索结果
网络例句

多群

与 多群 相关的网络例句 [注:此内容来源于网络,仅供参考]

Meanwhile, the experiments show that the multi-level swarm intelligence refinement algorithm is better than the multi-level tabu search refinement algorithm, especially in view of the probability that the approximate global minimum partition of the coarser graph may be the local minimum partition of the finer graph. Furthermore, the experiments show that the multi-level ant colony optimization refinement algorithm achieves more performance improvement than the multi-level particle swarm optimization refinement algorithm, using the gain of vertex more effectively.

实验数据反映出,针对最小图上的全局最优剖分可能是初始图的局部最优剖分、粗化图上的全局最优剖分可能是细化图的局部最优剖分的情况,基于群智能的多水平迁移优化算法相比基于禁忌搜索的多水平迁移优化算具备更强的逃离局部最优的能力;基于蚁群的多水平迁移优化算法相比基于微粒群的多水平迁移优化算法,对收益值的启发信息更为有效地利用,取得最佳的性能改进。

Cast, the number of hawks or falcons cast off at one time, usually a pair; cete, a company of badgers; covert, a flock of coots; covey, a family of grouse, partridges, or other game birds; drift, a drove or herd, especially of hogs; exaltation, a flight of larks; fall, a family of woodcock in flight; gam, a school of whales, or a social congregation of whalers, especially at sea; kennel, a number of hounds or dogs housed in one place or under the same ownership; kindle, a brood or litter, especially of kittens; litter, the total number of offspring produced at a single birth by a multiparous mammal; muster, a flock of peacocks; nide, a brood of pheasants; pod, a small herd of seals or whales; pride, a company of lions; rout, a company of people or animals in movement, especially knights or wolves; school, a congregation of fish, or aquatic mammals such as dolphins or porpoises; shrewdness, a company of apes; skein, a flight of wildfowl, especially geese; skulk, a congregation of vermin, especially foxes, or of thieves; sloth, a company of bears; sord, a flight of mallards; sounder, a herd of wild boar; stable, a number of horses housed in one place or under the same ownership; swarm, a colony of insects, such as ants, bees, or wasps, especially when migrating to a new nest or hive; troop, a number of animals, birds, or people, especially when on the move; warren, the inhabitants, such as rabbits, of a warren; watch, a flock of nightingales; and wisp, a flock of birds, especially of snipe.

cast 指一次所放飞的鹰或隼的数目,通常为一对: cete,一群; covert 一群大鹋; covey,一群松鸡、石鸡或其它作猎物的鸟; drift,一群或一堆,尤指家猪; exaltation,一群云雀; fall,一群飞行中的丘鹬; gam,一群鲸或一伙捕鲸人,尤指在海上的; kennel,一群住在一起或属同一个人所有的猎狗或狗; kindle,一窝或一巢,尤指小猫: litter,一产多胎的哺乳动物一次所生的幼仔的总数; muster,一群孔雀; nide,一窝野鸡; pod,一小群海豹或鲸; pride,一群狮子; rout,一群在行进中的人或动物,尤指骑士或狼; school,一群鱼或水生哺乳动物如海豚或小鲸; shrewdness,一群猿; skein,一群猎鸟,尤指鹅; skulk,一群害兽或坏人,尤指狐狸或小偷; sloth,一群熊; sord,一群野鸭; sounder,一群野公猪; stable,住在同一处或属同一个人所有的一群马; swarm,一群昆虫,如蚂蚁、蜜蜂或黄蜂,尤指当它们迁往一个新的巢或蜂房时; troop,一群动物、鸟或人,尤指在行进中时; warren 养兔场的一群动物,如兔子; watch 一群夜莺; wisp 一群鸟,尤指鹬鸟参见同义词 crowd

Based on the fundamental principles of the improved method mentioned above, multi-functional computation software package, which can be used to analyze effectively the interference effects of random flaws in plane problem, boundary problem and space problem, is compiled and a number of problems involved in the interference effects of different kinds of flaws such as random equal length through-cracks, random branched throughcracks, random unequal length through-cracks, random holes to through-cracks, unequal length edge cracks, equal length and distance multiple edge cracks, random notches with different aspect ratio, random notch to edge crack, non-coplanar surface cracks with different aspect ratio, staggered surface cracks, surface crack to embedded crack and embedded cracks near free boundary are analyzed and computed by the package.

依据上述改进法的基本原理,本文编制了能有效地分析平面问题,边界问题及空间问题的任意缺陷群相互干涉效应的多功能计算软件包。据此,本文分析计算了各类缺陷群。诸如,任意等长裂纹群。任意折裂纹群;任意不等长裂纹群,任意孔与裂纹群,不等长边裂纹群。等长等间距多裂纹群,任意形状比缺口群,任意缺口与边裂纹,非共面不同形状比表面裂纹群,交错型表面裂纹群,表面裂纹与埋藏裂纹群及自由边界附近埋藏裂纹群等的相互干涉效应问题。

Furthermore, the information dissemination of several topologies is analyzed theoretically, and the statistical properties of canonical topologies and varying neighborhood topology are analyzed from graph theory.

针对传统粒子群优化算法中全连接型拓扑和环形拓扑的特点,引入了一种粒子群信息共享方式——多簇结构,进而基于多簇结构提出了动态可变拓扑策略以协调动态概率粒子群优化算法的勘探和开采能力,并从理论上分析了最优信息在各种拓扑中的传播,同时从图论角度分析了几种经典拓扑以及动态可变多簇结构的统计特性。

Ofeffective 1st branches, length of main inflorenscence, effective siliques of maininflorenscence, density of main inflorenscence, length of silique, seed per sillique,1000 seed weight, total effective siliques per plant had significant positive correlationwith yield per plant. Polymorphisms between zhongshuang No.4 and H228 was examined by SSR primers. 152 primers Showed polymorphisms, and a linkage map containing 123markers, including 18 linkage groups was constructed. The total genetic distance ofthe map was 3483.1cM, and the average distance of two adjacent markers was28.32cM.

选用SSR引物对中双4号和H228间进行多态性检测,有152对引物在双亲间表现多态性,用这些引物分别对142个株系进行检测,构建了含有123个SSR分子标记、18个连锁群的连锁遗传图,总图距为3483.1cM,标记间平均距离为28.32cM,各标记在18个连锁群上的分布很不均匀,其中,第1、12、13、17连锁群上分布标记较多,其它连锁群上分布标记较少。

Tricholoma may be a paraphyletic genus two. The collections identified as T. caligatum is a mixture. Some parts of them from France are members of T. matsutake, the other parts from North America are closed to T. bakamatsutake and T. fulvocastaneum. Tricholoma robustum and T. focale form a clade which is obviously a sister group of the stirp Subannulate. The stirp Caligata was defined as a group mainly on the basis of the predominant veil. But from the result of molecular systematic analysis, the presence of veil is not a stable character in the matsutake group. Species having symbiosis with conifers and broad leaf tree are all transformed from those whose host specificity is not strict. The phylogenetic tree based on ITS sequences resembled the tree of NJ algorithm based on cladistic coding. In the phylogenetic tree based on morphylogical characters, T. zangii and T. bakamatsutake form a clade, but it is the result of convergent evolution as suggested by molecular analyses. The distribution area of the matsutake group can be divided into six regions: middle and northern Europe region, Mediterranean region, Hengduan Mount.— Southeastern Tibet region, Northeastern China—Japan—Far-east Russia region, the Atlantic—North America region and the Rocky Mountain region. The abundance center of the matsutake group are Hengduan Mount.—Southeastern Tibet region and the Rocky Mountain region. Hengduan Mount.

松口蘑群的分子系统学研究得出的结果有:由于粗壮口蘑和羽衣口蘑明显和亚环族(Tricholoma,section subannulate)的种类是来自同一个谱系,和其它松口蘑群的种不具有最近共同祖先,因此松口蘑群是一个多系群;松口蘑群和口蘑属其他种类的亲缘关系比和蜜环菌属更接近;梭柄松苞菇和松口蘑群的差距明显小于油黄口蘑(T.flavovirens)和棕灰口蘑;口蘑属是一个多系群;鉴定为欧洲口蘑的标本明显不是一个单系群,其中一部分是松口蘑,另一部分和黄褐口蘑及傻松口蘑(T.bakamatsutake)比较接近;划分松口蘑群的标准是菌环的存在,但从分子系统学的结果来看,菌环的存在与否并非是一个很稳定的性状;和针叶树专性共生及和阔叶树专性共生均由寄主专化性不强的种类转化而来;在形态学系统发育树上青冈口蘑和傻松口蘑被聚为一个分枝,分子系统学的研究结果表明,这是趋同进化的结果;用支序方法编码作出的NJ树的结果更接近ITS序列的结果。

There are no distinct differences between ancestral character state and descendant character state in some characters. 4. Only one outgroup can't give enough information to tell what the ancestor looks like. It make us not to understand how a lot of charactors evolved. 5. The matsutake group is polyphyletic. 6. The character coding is not precise enough. 7. Some characters are not homology. The result of molecular systematic study on the matstuake group shows the group is not monophyletic. The matsutake group is more closed to Tricholoma than Armillaria. ITS sequence of Catathelasma ventricosum is nearly identical to that of the matsutake group, although apparently they are very different from each other in morphological characters.

对松口蘑群通过形态学特征进行系统发育关系分析造成很大的干扰的原因有:松口蘑的种类大多形态特征比较简单,可提供进行分析的特征不多;某些性状在一些状态之间的反复转化,造成分析上的误差;在进化过程中某些性状无明显的祖征和衍征,在分析过程中很难确定进化极性;选择外群时应该用一个特定类群进行整体理解后,确定各个性状的极性,不要只用单种作为外群;松口蘑群是一个多系群;进行比较的性状不一定是同源的;数量性状编码过于粗放,反映不出真实的情况。

According to the phytosociological theories and methods of Braun-Blanquet's school, the regional savanna vegetation of the dry-hot valleys of Yuanjiang river had been investigated. Based on the principle of fidelity degree, the typical 110 releves taken from every sampling stands of the dry-hot valleys were sorted up from below to upper into 15 Associations, then into 5 Alliances, 2 Orders and 1 Class. A synoptic classification system of Class-Order-Alliance-Association was established for the purpose to reflect deeply the characteristics of all syntaxa there in the aspect of plant component and their abundance-dominancy, presence, cover coefficient, life form, growth form, and ecological environment, community structure, species types and so on.

采用Braun-Blanquet植物群落学研究的理论与方法,对云南元江中上游干热河谷分布的植被进行考察研究,把各处取得较典型的110个样地记录按确限度的原则由下而上归类成15个群丛、5个群属、2个群目和1个群纲,建立了元江干热河谷萨王纳植被群纲—群目—群属—群丛分类系统综合表和15个群丛表,以全面深入反映全干热河谷植物群落各级分类单位中各植物种类组成的多优度、存在度、盖度系数、生活型和生长型等特征及其群落结构、生态环境和种型类别。

Results (1) From more than 100 primers, 11 primers producing polymorphism and reproduceable bands were selected, 129 bands were amplified.(2) The percentage of polymorphic bands within different populations were 20.9%-55.0%.(3) The cluster map including all samples were obtained by UPGMA. In the map, there were six cluster groups and three individuals outside the groups. The branch with five samples of Zhongjiang Sichuan population were far from other samples in genetic distance.(4) According to the distribution provinces five groups were divided in genetic variance analysis. Genetic variance 80.44% existing within population, 8.29% among populations and 11.27% among groups.

结果 (1)从100多个引物中选择出11个多态性强和重复性好的引物,扩增得到129条带;(2)不同居群内多态位点比率为20.9%-55.0%;(3)用UPGMA法得到所有样本的聚类图,可分为6个主要分支组和3个组外个体,其中四川中江居群的5个样本聚为一组,并与其他样本遗传距离较大;(4)按产地分组,遗传差异的80.44%存在于居群内,8.29%来自于组内居群间,11.27%的遗传差异来自于组间。

Some results about the re-emission spectrum , the re-emission flux, the albedo and the equivalent temperature at the boundary are given, and the variations of re-emission spectrum with the incident flux are analyzed.

利用一维多群辐射输运程序,数值研究了平面Au靶入射流强度对再发射谱、再发射流、反照率及边界等效温度的影响。

第3/70页 首页 < 1 2 3 4 5 6 7 8 9 ... > 尾页
推荐网络例句

It seems likely that Kraft will return with a better offer.

看起来卡夫要重新考虑一个更好的出价了。

But he'd rather burn off my feelers and watch me squirm.

可他却放任那个家伙对我为所欲为!

He consistance of the population dissociation coefficient method andthe sample dissociation coefficient method for the calculation of structural reliabilityin solid rocket motors was reviewed.

依据结构强度-工作应力理论模型,应用数理统计方法和对某团体发动机大量试验数据的实例计算,证明了总体变异系数法和样本变异系数法在结构可靠性计算中的一致性。