The cluster size in this system is not supported 不支持此系統(tǒng)簇的大小。
This paper reviews the relationships between cluster size and firm performance - positive , negative and nonlinear relationships . based on the previous research , it analyzes how to determine the optimal cluster size 摘要主要對(duì)國(guó)外學(xué)者關(guān)于集群規(guī)模與公司業(yè)績(jī)的三種關(guān)系?正相關(guān)、負(fù)相關(guān)和非線性相關(guān)進(jìn)行了較為詳細(xì)的綜述和理論闡釋,并討論了如何確定集群的最優(yōu)規(guī)模。
The structure of rhn , ptn clusters for n 13 are very similar and both of these two kinds of clusters have a tendency evolving to icosahedron . for larger clusters when n > 13 , the structures of ptn show disorder characteristic but rhn keep in order structure . with the increasing of cluster size , the total binding energies and coordination numbers for rhn , ptn ( n = 2 - 20 ) clusters increase monotonously 對(duì)于rh _ n , pt _ n ( n = 2 - 20 )團(tuán)簇,當(dāng)n 13時(shí),兩種團(tuán)簇具有相似的幾何結(jié)構(gòu),都從密堆積結(jié)構(gòu)向二十面體結(jié)構(gòu)演化;當(dāng)n 13時(shí),銠團(tuán)簇的基態(tài)結(jié)構(gòu)傾向于有序結(jié)構(gòu),而鉑團(tuán)簇的基態(tài)結(jié)構(gòu)則傾向于無(wú)序結(jié)構(gòu)。
When a cluster of particles is immersed in a uniform electric field , the particles are coupled together due to the mutual interaction among them . this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size . in this work , we attempt to estimate the dipole moment of finite cubic arrays of particles , in terms of that of particle chains which has been known . we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment . with replacing the chain by equivalent sphere , a cluster is simplified to a planar array , and this planar array is simplified to a chain , then the dipole moment is obtained . numerical calculations are performed . it is found that our results are acceptable 置于均勻電場(chǎng)中的一簇球形顆粒,由于其內(nèi)部的相互作用而耦合在一起.這致使簇的感應(yīng)偶極矩與簇的幾何結(jié)構(gòu),大小以及顆粒的介電常數(shù)等參量有關(guān).試圖通過(guò)已知的鏈的偶極矩確定任意大小長(zhǎng)方結(jié)構(gòu)的簇的偶極矩.假定顆粒鏈可以被具有同樣偶極矩的一個(gè)等效介質(zhì)球代替,并將具有空間結(jié)構(gòu)的顆粒簇處理成面結(jié)構(gòu)簇,再將面結(jié)構(gòu)簡(jiǎn)化成一個(gè)顆粒鏈,從而確定簇的偶極矩.在這一過(guò)程中,通過(guò)不斷增加等效球的尺寸,將顆粒間的相互作用包含在簇的偶極矩中.數(shù)值分析了立方結(jié)構(gòu)簇的偶極矩,結(jié)果是可接受的
Abstract : when a cluster of particles is immersed in a uniform electric field , the particles are coupled together due to the mutual interaction among them . this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size . in this work , we attempt to estimate the dipole moment of finite cubic arrays of particles , in terms of that of particle chains which has been known . we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment . with replacing the chain by equivalent sphere , a cluster is simplified to a planar array , and this planar array is simplified to a chain , then the dipole moment is obtained . numerical calculations are performed . it is found that our results are acceptable 文摘:置于均勻電場(chǎng)中的一簇球形顆粒,由于其內(nèi)部的相互作用而耦合在一起.這致使簇的感應(yīng)偶極矩與簇的幾何結(jié)構(gòu),大小以及顆粒的介電常數(shù)等參量有關(guān).試圖通過(guò)已知的鏈的偶極矩確定任意大小長(zhǎng)方結(jié)構(gòu)的簇的偶極矩.假定顆粒鏈可以被具有同樣偶極矩的一個(gè)等效介質(zhì)球代替,并將具有空間結(jié)構(gòu)的顆粒簇處理成面結(jié)構(gòu)簇,再將面結(jié)構(gòu)簡(jiǎn)化成一個(gè)顆粒鏈,從而確定簇的偶極矩.在這一過(guò)程中,通過(guò)不斷增加等效球的尺寸,將顆粒間的相互作用包含在簇的偶極矩中.數(shù)值分析了立方結(jié)構(gòu)簇的偶極矩,結(jié)果是可接受的
cluster: n. 1.叢集;叢;(葡萄等的)串,掛;(花)團(tuán);(秧) ...size: n. (用面粉、樹膠、樹脂等配制的)膠料,漿糊〔用于給紙 ...cluster of equal size: 大小相等的群cluster of unequal size: 大小不等的群directory cluster size: 目錄叢集大小page fault cluster size: 頁(yè)面故障束大小a cluster: 自力村碉樓群a cluster of: 一串/叢; 一串,一束,一群; 一群、一組; 一群;一組cluster: n. 1.叢集;叢;(葡萄等的)串,掛;(花)團(tuán);(秧)蔸;組。 2.(蜂、人等的)叢,群,群集。 3.【物理學(xué)】聚集,組件;【化學(xué)】類族,基;(原子)團(tuán);【天文學(xué)】星團(tuán)。 4.【美軍】(表示又一個(gè)同等勛章的)金屬片。 5.【語(yǔ)音】音叢,音群,義叢,詞組。 6.集中建筑群〔在一大片土地上集中興建住宅,以提供較大的公共休息場(chǎng)所〕。 in a cluster 成串的;成團(tuán)[群]的。 vi.,vt. (使)成群;(使)群集。 clustered column 【建筑】簇柱。 by size: 按從小到大; 按大小; 依大小; 以體積分類for size: 為了試尺碼, 為了試試是否合適, 按不同尺碼in size: 在大小方面s size: 穿不下; 衛(wèi)生褲size: n. 1.大小,尺寸規(guī)模身材。 2.(鞋帽等的)尺碼,號(hào);(紙張的)開。 3.巨大,大量;相當(dāng)大的分量。 4.〔口語(yǔ)〕實(shí)情,真相。 5.(人的)能力,才干,身價(jià);(物的)質(zhì)量,特性。 6.量珠尺,珍珠篩。 7.〔口語(yǔ)〕體重。 8.〔古語(yǔ)〕(飯食、酒類的)定量;份飯。 full size 如實(shí)物大。 life size 如真人一般大〔指雕像等〕。 a size seven hat 七(號(hào))大的帽子。 What size do you take in gloves 您手套尺碼要多大? That's about the size of it. 〔口語(yǔ)〕實(shí)際情況大致就那么樣。 a man of a considerable size 相當(dāng)有才干的人。 be of a size 大小相同。 cut down to size 把重要性[威望等]降至合適的程度,還…的本來(lái)面目。 for size 試試尺碼,試試是否合適;按不同尺碼。 of all sizes 大小尺碼齊全。 be (half, twice) the size of 如…的(一半,一倍)大小。 of some size 相當(dāng)大。 size and strength 大小強(qiáng)弱。 take the size of 量…的尺寸。 vt. 1.依大小排列;量大?。粶y(cè)量大?。弧拒娛隆苛可矶?,依身長(zhǎng)排列。 2.篩分,分粒。 3.按規(guī)定尺寸制作;使…大小合適。 vi. 1.(在大小、質(zhì)量等方面)相同,不相上下 (up to, up with)。 2.領(lǐng)取定食。 size a company 按身段高低排列一連士兵。 size down 由大到小排列。 size up 夠標(biāo)準(zhǔn),合尺寸;估量,測(cè)量;〔口語(yǔ)〕品評(píng),鑒定(人物等)。 n. (用面粉、樹膠、樹脂等配制的)膠料,漿糊〔用于給紙張、皮革、織物等漿洗上光〕。 vt. 給…上膠,對(duì)…上漿。 a sizing machine 漿紗機(jī)。 size for: 為試尺碼size of: 家庭規(guī)模the size of: 地球是月球的49倍to size: 精確按尺寸a cluster of buildings: 一群建筑物a cluster of butterflies: 一群蝴蝶a cluster of flaws: 密集區(qū)缺陷a cluster of grapes: 葡萄a cluster of islands: 一群海島a cluster of stars: 一個(gè)星團(tuán)abell cluster: 阿貝爾星系團(tuán)