瓶徑 的英文怎麼說

中文拼音 [píngjìng]
瓶徑 英文
bottleneck
  • 瓶 : 1. （瓶子） bottle; vase; jar; flask 2. （姓氏） a surname
  • 徑 : Ⅰ名詞1 （狹窄的道路; 小路） footpath; path; track 2 （達到目的的方法） way; means 3 （直徑的簡稱...
  1. The optical manufacturing for off - axis aspheric mirrors has become increasingly challenging for two reasons. the mirrors, in addition to being larger, are more aspheric and off - axis in order to meet the requirement of next generation space camera, which is commonly configured as three - mirror - anastigmat ( tma ) to get both wide fov and high resolution, and the required accuracy is more stringent

    近年來，人們提出了「離軸三反消像散」 （ tma ）結構來滿足下一代空間相機「詳查」和「寬覆蓋」的技術要求，該結構中要求使用三塊離軸非球面反射鏡，而大口徑、高精度離軸非球面反射鏡的製造技術是研製tma結構空間相機的主要技術瓶頸之一。
  2. Niger with phytase activity about 2250 u / ml which selected by protoplast - uv mutation was used as original, prepared it into fungu - suspend - liquid, through uv mutation, daub on the filter - substract. pre - primary - selection was according to the lucency - circle, primary - selection was one fungus inoculate one flask to ferment, secondary - selection was using several high phytase activity fungus through one fungus inoculate 2 - 3 flasks to ferment. then one or two high phytase activity fungus of the secondary selection were used in the next mutation cycle

    首先用粗略制備的原生質體經紫外誘變篩選到一株酶活為2250u ml的實驗出發菌；制備成菌懸液，紫外燈下照射誘變，紅光下塗抹篩選平板，恆溫培養2 3d ；按透明圈大小進行預初篩，挑選徑圈比大的菌落接斜面，恆溫培養3d ；按一株一瓶的方式進行初篩；從中選取酶活較大的3 5株，按一株2 3瓶的方式進行復篩；挑取酶活大且穩定的1 2株進入下一代誘變篩選。
  3. Radio waves would vaporize the waste, which would then be sent into a magnetic bottle containing a thin, trapped plasma

    在磁瓶中，放射電場會使電漿與大部分廢料離子沿著一個螺旋路徑繞行。
  4. We pay more attention on the external assessments including politics, economy, laws, culture, technology and etc. in part two, according the assessment herein before, we seek after the way of building the very core rivalship ability of the sme, and the carving out strategy of sme

    第二部分著重探討了高新技術中小企業的發展戰略。討論中小高新技術中小企業構建企業核心能力的途徑：抓住細分市場，實行目標集中的戰略；加大技術創新力度，提高企業核心產品競爭力；建立新型的企業人才機制；實施管理創新，突破家族化管理瓶頸。
  5. And there comes the evening over the lonely meadows deserted by herds, through trackless paths, carrying cool draughts of peace in her golden pitcher from the western ocean of rest

    在那裡，黃昏來了，越過無人畜牧的荒林，穿過車馬絕跡的小徑，在她的金瓶里帶著安靖的西方海上和平的涼飆。
  6. All of them increasingly limit the development of affordable decent housing. according to these mentioned problems, the paper analyses urban land use system, personal credit system and used housing market ; reconstructs a new supply system of affordable decent housing ; illustrates that only by improving related measures can affordable decent housing break through bottleneck and boom again

    為解決上述問題，論文從城市用地制度、個人信用制度、住房二級市場和重構經濟適用住房的體系幾個方面做了闡述，指出只有配套措施的完善，經濟適用住房才能突破瓶徑，再次迎來其發展的春天。
  7. If someone goes to your site where you sell all different kinds of arts and crafts, but they are only interested in buying popsicle stick bird feeders, you need to have an easy way for them to find what they are looking for

    如果一個人在你的站點上查找所有不同類型的藝術品和手工製品的銷售信息，但他們只對棒冰棍和奶瓶感興趣，那麼你就需要為他們提供一條方便的途徑來找到類似的信息；否則，他們就會到其它網站上去查找這些信息。
  8. Wood compounding profile extrusion line, board extrusion line including technology and recipe pe, pp, pvc pipe, profile extrusion line, pvc profile welding machine lab line single twin - screw extruder, cast blow film, sheet, injection molding

    擠出機的最小直徑為15mm ，可提供單雙螺桿擠出機流涎吹塑膜片材板材吹瓶注塑管材型材線纜導管等各類精密實驗室設備。
  9. When both genes were co - expressed in e. coli, the activity of ppsa varied from 2. 1 - 9. 1 fold comparing to control, but the activity of tkta was relatively stable ( 3. 9 - 4. 5 fold ). whatever the two genes were expressed respectively or cooperatively, both could promote the production of dahp, the first intermediate of the common aromatic pathway, but co - expression was more effective on forming dahp and screened ppt - and ptp - as more effective. the results demonstrate that co - expression of ppsa and tkta can improve the production of dahp, and what ' s more, when multigenes co - expressed, the recombinant which has coordinated enzymes activity is optimum

    莽草酸途徑的最優化和整體調控基因csra的敲除正是上述改變的分子基礎，同時也為三種芳香族氨基酸的基因工程菌的構建打下了基礎; 7 .在國內外首次實現了共同途徑限制性底物關鍵酶ppsa刁無『及arog與分支途徑關鍵酶基因phea的串聯高效表達，所構建的重組質粒ptga ，其ppsa 、 tkta 、 arog 、 cm和pd的酶活分別比對照提高了3 、 2 、 2 ， 5 、 4 、 2 . 3倍，且其酶活比較協調一致; 8 .將ptga導入到篩選的基因敲除和基因替換菌株大腸桿菌31884 c甲b中，搖瓶發酵證實比以往所構建的基因工程菌株具有較高的phe產量和糖轉化率率，分別為0 . 448 %和22 . 4 % 。
  10. Tianjin international steeltube trade center main production main products are : stainless steel pipe, seamless pipe, high - temperature high - pressure pipe, tube chemical, mechanical structure with steel pipes and cylinder pipe, line pipe and large - diameter surface casing various material models of various series

    天津國際商貿管材銷售中心主要生產經營主要產品有：不銹鋼管、無縫圓管、高壓高溫鋼管、化工用管、機械構造用鋼管、氣瓶管、管線管、大口徑表層套管各種不同材質不同型號的各種系列。
  11. On the basis, design optimization of film grabing structure of hspc is realized. it solves the technical bottleneck of high - speed photograph. the design ability of the hspc is improved

    在此基礎上，實現了高速攝影機抓片機構的優化設計，解決了高速攝影機高速攝影的技術瓶頸，提升了攝影機的研製水平，為高速攝影性能的提高提供了一條新的研究途徑。
  12. Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants

    文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映
  13. The bottleneck problem that has long obstructed possible breakthroughs in chinese language teaching is that the established subject - object thinking pattern reduces the teaching process to teachers " one - way conveyance of knowledge, and further on makes it a lifeless monologue. this to a certain extent goes against the basic law of chinese language teaching

    長期以來困擾語文教學取得突破性進展的瓶頸問題是：以主? ?客單一的思維模式把語文教學看作是教師單向的傳輸過程，從而導致語文教學呈現出死氣沉沉的獨語狀態，與本應充滿生命活力、其樂融融的語文教學的本真狀態大相徑庭，在一定程度上背離了語文教學的本質規律。
  14. In addition, from department structure and composition, because of changes of holistic environment, actual affairs are increasing continuously. this should make executive departments adjust their function boundaries. however, with the continuous emergence of new affairs and problems and many temporary tasks distributed to any department in the process of solving problems, as time passes these tasks become functions of this department, but there are also some bottlenecks when actual business is done, which makes the operation of holistic business processes sluggish and inefficient

    另外，從職能結構與組成方面而言，由於整體環境的變化，具體事務也在不斷的增加，這就使各職能部門的工作職能范圍也應有所調整，但新事務新問題不斷出現，且在處理時大多作為臨時任務安排在某部門中，久而久之被默認為該部門的職能之一，但在實際業務處理時往往又存在瓶徑，使整體業務流程運轉不暢，造成整體的運轉效率下降。
  15. Together with load and path analysis, you get a pretty complete picture of how to find and fix the bottlenecks

    通過加載和路徑分析，您可以獲取一個如何發現和修復瓶頸的相當完整的描述。
  16. Bottling industry. glass bottles. glass finish for pouring clip on cap finish of 29 opening diameter 21 mm for still liquids so - called " verplast " diameter 29 21 no 3 for spout. dimensions

    制瓶工業.玻璃瓶.靜止液體用" verplast "直徑29 21的3號口徑直經29mm口部2 mm蓋上有傾倒箍的玻璃瓶口.尺寸
  17. The paper introduces the methods of drying and pycnometer for sediment yield of total precipitation erosion of observation model and validates the reliability of the measurement through check tests of sediment concentration with different particle sizes

    摘要介紹了測量模型次降雨侵蝕產沙量的烘乾法和密度瓶法，並通過不同粒徑組泥沙渾水含沙量的對比試驗，驗證了測量方法的可靠性。
  18. According to the definitions of bottleneck bandwidth, available bandwidth and bulk transfer capacity, we analyzed the algorithms which named vps ( variable packet size ), pptd ( packet pair / train dispersion ), slops ( self - loading periodic streams ) and topp ( trains of packet pairs ) ; based on the principle of sub - path bottleneck measurement, we developed the bottleneck measurement algorithm using heterogenous packet - pair train ; after designing the three child algorithms ( demarcating bandwidth range, approaching bandwidth value and predicting the trendency of available bandwidth fluctuation ), we performed the algorithm called self - loading binary search ; applying the multi - home properties of sctp ( stream controltransmission protocol ) and measurement algorithm of available bandwidth, we presented a scheme to adjust the sctp transport path when there are network congestions or faults ; by the library of winsock and winpcap, we developed a measurement program to look for bottleneck bandwidth. in ns2 experiments, the algorithm based on heterogenous packet - pair train fitted well, and the algorithm of self - loading binary search worked quickly, and the sctp scheme improved the throughput effectively

    本文根據瓶頸帶寬、可用帶寬和btc （ bulktransfercapacity ）三類網路帶寬定義，分析了vps （ variablepacketsize ）和pptd （ packetpair / traindispersion ）瓶頸帶寬測試演算法， slops （ self - loadingperiodicstreams ）和topp （ trainsofpacketpairs ）可用帶寬測試演算法;基於子路徑瓶頸測試原理，設計了異構包對序列的瓶頸測試演算法;並結合三個子演算法（界定帶寬范圍演算法、接近帶寬值演算法和帶寬變化趨勢判定演算法） ，設計了自載流折半查找的可用帶寬測試演算法;把上面的演算法應用到sctp （ streamcontroltransmissionprotocal ）的多宿性和可用帶寬測試，提出了一個網路擁塞或故障時調整sctp傳輸路徑的方案;結合winsock和winpcap兩套網路開發工具，設計了一個瓶頸帶寬測試程序;通過ns2模擬實驗，驗證了基於異構包對序列瓶頸測試演算法的準確性、自載流折半查找演算法的快速性，和sctp改進方案的有效性。
  19. Gas cylinders. taper screw thread for valve stem and cylinder neck assembly. nominal diameter 28. 3 mm, taper 3 25, 14 tpi, whitworth form

    氣瓶.閥門堵頭和氣瓶頸口組件用錐體螺紋.公稱直徑28 . 3毫米，錐度3 25 ，每英寸螺紋齒數14 ，惠氏螺紋
  20. This incorporates tip 3 : identify critical paths and bottlenecks early

    這個合併在策略3中：在早期確定重要路徑和瓶頸。
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