簇生根 的英文怎麼說
中文拼音 [cùshēnggēn]
簇生根
英文
fasciculate roots-
Tufted with tillers, short rhizomes and stolons ; leaf folded in bud ; leaf blade bluish green, linear with boat - shape tip ; inflorescence an open panicle ; seeds awnless. flowers from april to june
本種?簇生形，具分? * ，亦具短的根莖及匍匐莖；葉在芽期是褶生；葉片藍綠色，長條狀，前端成船狀；花序?開放圓錐花序；種子無芒；花期4至6月。The basic idea for hierarchy - based method is that creating and maintaining a tree of clusters and sub - clusters according to some kind of criterion to measure the distance of clusters, the procedure will be sloped until some terminal conditions are satisfied. hierarchical clustering method can be further classified into agglomerative and divisive hierarchical clustering, depending on whether the hierarchical decomposition is formed in a bottom - up or top - down fashion. most hierarchical clustering methods can produce the better results when the clusters are compact or spherical in shape. but they do not perform well if the clusters are any shape or there are outliers. a main reason is that the most hierarchical clustering methods employ medoid - based measurement as distance between clusters
基於層次方法的聚類的基本思想足：根據給定的簇間距離度量準則，構造利維護一棵由簇利子簇形成的聚類樹，直至滿足某個終結條件為止。根據層次分解是自底向上還是自頂向下形成，層次聚類方法可以分為凝聚的（ agglomerative ）和分裂的（ divisive ） 。人多數層次聚類演算法在緊密簇或球形簇結構下能夠產生較好的聚類效果。On our conjecture, gene 3a, a highly conserved sequence, may be the determinant of the virulence of fmdv. changes in 3a have been associated with altered host range. a deletion in 3a has been associated with bovine attenuation of fmdv
我們根據已有資料推測， 3a基因可能是口蹄疫病毒的毒力決定簇，它具有高度保守性，其變異和部分缺失對病毒在牛體內的致弱和宿主嗜性發生改變起重要作用。This scheme can avoid the emergency of orphan effectively, and gives a good solution when the node isn ’ t available. the protocol we design is named as soptt, which is shorted as “ self - organize protocol of tree topology ”. the layer of application we design can gather and send data, realize the function of data fusion to avoid the potential communication congestion so that the communication will be more effectively
該協議解決了節點路由的建立和重建，還可以根據節點剩餘電能的情況智能選擇簇首節點，並且有效地避免了孤兒節點的產生，對于節點失效的情況也能夠很好處理;在應用層，基於智能樓宇溫度監測應用環境，設計並實現了採集發送數據的程序，使得採集、發送數據的頻率符合應用需要，並且提出了數據融合的思想，以避免可能發生的通信擁塞，同時也達到了通信的高效性。In order to obtain a dna fragment containing aved gene, 5 ' end primer and 3 ' end primer, consisting of 18 and 20 nucleotides respectively, were designed and synthesized. a 2. 2 kb dna fragment containing aved gene was obtained by pcr when genomic dna of streptomyces avermitilis s - 2 was used as a template
為了得到aved基因片段，首先根據已知的阿維菌素生物合成基因簇的核苷酸序列，設計併合成了由18和20個核苷酸組成的5端和3端引物；以streptomycesavermitiliss - 2基因組dna為模板，經pcr擴增得到了2 . 2kb的含有aved基因的dna片段。分享友人