鏈上取代 的英文怎麼說
中文拼音 [liànshàngqǔdài]
鏈上取代
英文
chain substitution-
Elimination of an alkyl chain substituted on an aromatic ring results in the appearance of free radicals.
在一芳香環上一個取代烷鏈的消失，結果出現自由基。The product stewardship model of product design, systems integration, and complete supply chain management is a new approach to delivering proven services offered by outsourcing providers that can reduce time to market, speed product development, and achieve quality standards at the lowest total landed costs. it requires new thinking, new business models and new extended relationships. if done correctly oems can achieve greater business objectives with fewer resources while ensuring their intellectual property investment is protected
產品管理模式，產品設計、系統集成、完整的供應鏈管理是一種新的方式提供外包服務提供商提供證明，可以減少市場的時間，產品開發速度，實現質量標準的最低費用共計降落.它需要新思維、新的商業模式和新關系的延伸.如果做得正確代工業務上取得更大的目標，同時確保資源較少的投資保護自己的知識產權In this study, we attempted to construct an engineering strain producing only avermectin bl through the replacement of dna encoding dh2 - kr2 domains of the avermectin pks ( avedh2 - kr2 ) with dna encoding dh2 - kr2 domains from the pikromycin pks in s. avermitilis olm73 - 12, producing only avermectins b and no oligomycin. gene replacement vector pxl201 ( pkc1139 : : 5 ' flank + pia : dh2 - kr2 + 3 ' flank ) was used to transform 5. avermitilis olm73 - 12 protoplasts
我們以不產寡黴素而僅產阿維菌素b的工程菌olm73 - 12為出發菌株，用委內瑞拉鏈黴菌（ streptomycesvenezuelae ）中編碼pikromycinpks模塊2上完全活性的dh和酮基還原酶（ kr ）的dna區域對olm73 - 12染色體上編碼阿維菌素pks模塊2中dh和kr的區域進行取代，試圖構建僅產b1組分的基因工程菌。The natural herb - based feed additives and pesticides we currently research and manufacture are distilled from alkaloid of plants on the basis of characteristic of herb through our high - tech process sciences and manufacturing. we provide a full range of natural herb - based feed additives and pesticides with specific effectiveness. in an effort to making our unique contribution to removing the hidden danger of food safety through food chain system, we ve built our business by offering customers new choices that make them more productive and profitable
我公司研發生產的天然植物飼料添加劑和殺蟲劑，採用現代高科技手段，根據天然植物草本的特性，提取植物中的生物堿，精練配製而成，門類全，功效獨到，可從食品鏈層面上根本杜絕食品安全隱患，還人類食品以「清白」 。In this paper, i will present some algorithms of polyhedral visual hull reconstruction : ( 1 ) polyhedral v isual h ull generation a igorithm b ased one dge - pool - searching, which constrains the 3 - d intersections into the 2 - d planes intersection via the epipolar theory to reduce the complexity a nd c an r educe t he t imes f or c ones t o b e p rejected o nto t he i mage p lanes, i n which we induced the index list to every points on the surface of object, and connected the related points to get sub polygons on surface and in turn get the mesh model, we replace triangulation process of disordered points cloud by edge - pool searching. ; ( 2 ) reconstruction based on degenerated - polygon - intersection, which have the following improvements on traditional bull intersection : using degenerated polygon to orga nize intersected area on cone face, which may be discontinuous ; a fast intersection algorithm of polygons on the cone face based on degenerated polygons, which is consistent between the continuous polygons and the discontinuous ones. the intersection of degenerated polygons is similar to the convergence of two ordered lists, which is comparably simple to the bull operation ; ( 3 ) reconstruction algorithm based on ray - tracing, in which all the rays that run through the vertex on silhouette of object will intersect with all the cones correspondent to other silhouette, and we have to calculate the intersection of all such line segments, the endpoints of which are considered to lie on the surface of object and we will get the point cloud on the surface of object
同時利用共極線原理把三維計算投影到二維平面以降低求交計算的復雜度，該演算法可以減少光錐向圖像平面投影計算的次數，以邊池搜索取代散亂點集上進行的三角剖分； （ 2 ）基於退化多邊形求交的多面體可見殼模型重構，系統引入退化多邊形的概念，把錐體平面的交集中不連通的部分用一個退化多邊形來表示，並引入了新的基於退化多邊形的求交演算法，與傳統多面體可見殼重構相比，該演算法有以下幾點創新：在圖像平面以退化多邊形組織投影錐體和物體輪廓的交集，把任意錐面與物體輪廓的交集歸一到一個退化多邊形；基於退化多邊形的二維平面上多邊形快速相交演算法，該演算法在一定程度上就是兩個有序鏈表的合併，大大簡化了先前的布爾求交計算； （ 3 ）基於光線跟蹤的演算法，該演算法中所有通過輪廓頂點的光線和對應其它圖像輪廓的光錐進行求交計算，最後得到每次求交計算得到線段的交集，該線段的頂點就認為是物體表面點，從而得到物體表面的點雲。分享友人