極度近交 的英文怎麼說

中文拼音 [jídùjìnjiāo]
極度近交 英文
close inbreeding
  • 極 : i 名詞1 （頂點; 盡頭） the utmost point; extreme 2 （地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 交 : Ⅰ動詞1 （把事物轉移給有關方面） hand over; give up; deliver 2 （到某一時辰或季節） reach （a cert...
  • 極度 : extreme; exceeding; to the utmost
  1. Chinasat would like to push the commercial user and technology test of domestic digital trunking aggressively, and has basically built the digital trunking service network covering city and suburb in tianjin, jinan, nanjing and shanghai, forming the safeguard ability for emergency communication and command scheduling communication, providing professional scheduling command communication services for governmental public management, port and traffic sphere

    中國衛通積極推進國產數字集群的商用和技術試驗，在天津、濟南、南京和上海等地建成了基本覆蓋市區和近郊的數字集群業務網路，形成了區域應急通信和指揮調度通信保障能力，為政府公共管理和港口、物流、交通等領域提供了專業調度指揮通信服務。
  2. Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements

    利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大
  3. To meet this challenge, a research project was supported by ministry of communication and bv shanghai zhenhua port machinery co. ltd. focusing on analysis of tdtcd ( traditional design theories of crane drums ) the paper has studied the impacts of features under the binding force of wire ropes, the end - plate and rope slot. this study is based not only on the thin shell theory and viscoelastic mechanics to calculate the strength and stability of drum, but also on an experiment with technology in " state of act "

    本文結合交通部重點科技項目「港口起重機鋼絲繩傳動件高性能技術研究」和上海振華港機股份有限公司委託項目「起重機焊接捲筒極限壁厚研究」 ，針對起重機捲筒傳統設計方法偏於保守的情況，以薄殼理論和近代力學為基礎，以現代試驗技術為研究手段，對鋼絲繩緊箍力作用下的外載特性、端板、繩槽等因素對捲筒強度和穩定性的影響進行了系統的理論研究，在深入開展捲筒強度、穩定性和實驗模態分析等試驗的基礎上，提出了有別于傳統方法的捲筒強度、穩定性計算方法。
  4. Due to its supper - resolution imaging ability and its unique three - dimensional microfabrication ability. it has been widely used in life science, 3d - optical data storage, and lithographic microfabrication. the imaging principles of confocal microscopy have been discussed extensively by many authors, but all of those theories did n ' t account for the nonlinear effect of two - photon excitation

    近十多年來，其理論研究和應用研究都取得很大進展，特別是雙光子共焦顯微鏡，由於具有極高的空間解析度和特有的三維處理能力，因而在生物醫學研究、三維高密度存儲以及三維微細加工等領域具有變革性的應用潛力，取得了許多突破性進展，已成為光學及其交叉學科中最誘人、最活躍的研究領域之一。
  5. This event had some positive effects in history because it was conducive to the qing government ' s establishment of consulates to protect overseas chinese and the reform of traditional etiquette system and it also made contributions to the cultural exchanges between china and western countries

    蒲安臣使團在歷史上有著一定的積極意義，因為它有益於清政府設領護僑，改革傳統外交禮儀制度，並為近代中西文化交流做出了一定的貢獻。
  6. Accurate measurement of xpd for the microwave antenna using the near - field method

    高交叉極化鑒別度天線的近場測量
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