single tree 中文意思是什麼

single tree 解釋
單駕橫木 ＝whiffle tree.
  • single : adj 1 僅只一個的，單獨的；單式的；【植物；植物學】（花等）單瓣的；【無線電】單工的，單次的。2 獨...
  • tree : n 特里〈姓氏〉。n 1 樹〈主要指喬木，也可指較大的灌木〉。 ★玫瑰可以稱為 bush 也可以稱為 tree 2 木...
  1. Motivated by this observation, this paper studies the problem of efficiently processing k nn k - ge 1 search on r - tree - like structures storing historical information about moving object trajectories. two algorithms are developed based on best - first traversal paradigm, called bfp k nn and bft k nn, which handle the k nn retrieval with respect to the static query point and the moving query trajectory, respectively. both algorithms minimize the number of node access, that is, they perform a single access only to those qualifying nodes that may contain the final result

    例如，若已知動物的軌跡，則動物學家可能提出如下兩種查詢： i在時間區間ti ， tj內找到離一個給定的靜態點譬如食物源實驗室等最近的k條動物軌跡ii在時間區間ti ， tj內找到離一條預先指定的動物軌跡最近的k條動物軌跡。
  2. Not a single tree relieved the flatness of the plain.

    平原上單調得毫無變化，連一棵樹都沒有。
  3. This paper expounds the development and variation of the forestry science ， forest and forestry neally in past two cen turies the forestry science in itself goes through a transformation from traditional forestry science to modern forestry s cience. the modern forestry science, with the object of studying the establishment ， manageme nt and exploitation of the forestry ecosystem and the core of developing the eco logical environinent functi on of the forestry ecosystem ， is a subject that takes an overall play to the mul tiple benefits and function of forest. the cognition of forest also undergoes a variation from a single tree to trees g roup and still to forest ecosystem due to the deep alteration of the understand ing of forestry science and forest ， people begin changing their understanding of forestry from a central for m of timber utilizing which formed for a long time to a form that takes developi ng the ecological environment function of forestry ecosystem as its core and fo cal point ， and takes an overall play to the ecological ， economical and social function of forestry as its leadi ng thought and aim ， so as to realize the sustainable development of forestry

    論述了林學、森林與林業近兩個多世紀以來的發展和變化.林學經歷了由傳統林學向現代林學的轉變.現代林學是以森林生態系統的營建、經營管理和利用為研究對象，以發揮森林生態系統的生態環境功能為核心，全面發揮森林的多種效益和多種功能為目的的學科.對森林的認識也經歷了由單株樹木到樹木群體到森林生態系統的變化.由於對林學及森林認識的深刻變化，人們對林業的認識也就從長期形成的以木材利用為中心，轉變到以發揮森林生態系統的生態環境作用為核心和重點，全面發揮森林的生態、經濟和社會功能作為林業的指導思想和目標，以實現林業的可持續發展
  4. A single tree in a field is prominent

    田野里孤零零的一棵樹是很突出的。
  5. As a result, they turned green again, and not a single tree died

    結果是：茶樹又綠了！一棵也沒死！
  6. A single tree will absorb one ton of carbon dioxide over its lifetime

    一棵樹在它的一生中可吸收1噸二氧化碳。
  7. Random amplified polymorphic dna ( rapd ) markers were used to construct molecular genetic linkage map of a single tree ( p. taiwanensis hayata. )

    採用rapd分子標記來構建黃山松單株樹（仙居磐黃）的分子遺傳連鎖圖譜。
  8. " oh, " said jeremy, and he ran out to play. while outside, he searched for the tallest tree. he looked everywhere but couldn ' t find a single tree

    「哦， 」傑瑞米說，就跑出去玩了。在外面他就尋找最高的樹，他把所有的地方都看過了就是不能找到一棵最高的樹。
  9. It seems that god s offer is easier. hes created the whole garden of eden solely for the two of them, except for one single tree. however, they took even that

    好像上帝的東西比較簡單， ?造全部伊甸園給他們兩個享受，只有一棵樹要求他們不吃而已，結果他們也把它吃了！
  10. With the four forest community ' s age nearly the same, the order of different forest ground biomass of single tree was quercus liaotungensis > betulaplatyp hylla > popular davidiana > pinus tabulaeformis

    該研究揭示了森林群落自然演替的規律，對森林群落的經營管理和在黃土高原丘陵溝壑區進行林草植被建設和生態環境重建具有特殊意義。
  11. With the frequency division of wpd, etm uses shannon entropy as the criterion of determining whether or not dsi exist in certain wpd tree nodes and interference are suppressed successfully. lots of simulation data, lab data and on - site data have indicated that etm works with good efficiency, without pre - knowing of dsi information, extracts the phase of pd pulses accurately and can calibrate quantity of single type discharge

    大量的模擬數據、實驗室實測數據以及現場實測數據處理結果表明，小波包變換熵閾值法抑制干擾能力強，無需事先確定干擾的分佈，能夠準確檢測局部放電信號的相位信息，對于單一的放電類型，可以確定放電量的大小。
  12. If only one phase - to - ground relay operates, the operated phase is tripped in a single - pole tripping scheme ; otherwise, the tree phase of the protected line is tripped

    提出了繼電器按單相設置保護方案， ?相繼電器動作跳單相，超過兩相繼電器動作認為是相間故障則三相跳閘。
  13. The relaxation iterative method of branch flow in tree - type river systems is extended to the loop - type river networks, which can turn the problem of any complex river networks hydraulics into the problem of a series of single river hydraulics ; 4

    將樹狀河系支流流量的鬆弛迭代方法推廣為環狀河網支流流量的鬆弛迭代方法，從而實現了對于任意形式河網的復雜水力計算問題都化為一系列的單一河道的簡單水力計算問題。
  14. Through the stand investigation by setting up the sample site, the investigation results showed that the average dbh of 15 - year - old alniqhtllm fortunei planted under nature was 60 % larger than that of 17 - year - old pinus massoniana plantation under the same condition, the average tree height of the above was 38 % larger than that of the latter, the average single - tree volume of the above was 3. 2 times higher than that of the latter, the above showed the absolute dominance in stands

    摘要設立標準地進行林分調查，在標準地中選取擬赤楊標準木進行樹干解析，採用生長對比方式分析擬赤楊在馬尾松人工林中的生長情況，調查結果表明，在同一環境條件下， 15年生天然下種的擬赤楊比17年生馬尾松人工林平均胸徑大60 % ，平均樹高高38 % ，平均單株材積大3 . 2倍，在林分中表現出絕對優勢。
  15. The traditional decision tree, which was represented by id3 proposed by quinlan in 1986, can solve the classification problem well. but when the class number increases, the produced single decision tree becomes complex and generalization capability decreases

    以quinlan1986年提出的id3為代表的傳統決策樹能較好的解決分類問題，但當類的個數增多時，所產生的單一決策樹就會變得復雜同時概括能力降低。
  16. Font carved from a single walnut tree

    洗禮池從一株胡桃榭雕成
  17. Regulation of forestry structure emphasizes on forestry protection for environment, with selecting suitable tree seedling and grass seeds, and forming views of plant community to avoid single species of tree seedling and grass seeds. forestry protection for environment should not be below 60 %, and economic forestry no more than 20 %

    林業結構調整要堅持的生態防護林為主，不低於60 ，控制經濟林不高於20 ，要選擇適地樹種和草種，還林還草要樹立植物群落思想，避免林、草品種單一化種植模式。
  18. The data matrix for the 37 taxon contained 553 variable sites ( 57. 6 % ), of which 336 were phylogenetically informative. the phylogenetic relationships were inferred using the neighbor - joining and maximum - parsimony methods. in mp method, the heuristic search generated two single most parmonious tree

    雙蓋藏屬diplazium 、菜蔽屬c公刀ipteris 、短腸蔗屬allantodia和腸獲屬diplaziopsis構成單系起源，在兩種系統樹中分別得到98 % （ mp ）和100 % （ nj ）的支持率。
  19. China is is actively encouraging tree planting, but fast - growing, single species forests threaten china ' s wildlife and biodiversity

    中國在大力鼓勵植樹造林，但速生豐產林和人工純林的發展對中國的野生物種和天然林生物多樣性造成了威脅。
  20. The creativity of the work in the paper can be shown as the following four aspects : ( 1 ) for single subnet, the condition of simple link judgement is added into the ptda, so the algorithm is improved well ; ( 2 ) for multiple subnets, the ptda becomes more effective, benefited from use of breadth - first - search algorithm of graph, port - deletion method etc ; ( 3 ) due to suitable adoption of the three protocols stp, snmp and arp, the ptda based on spanning tree protocol can get very effective and correct ; ( 4 ) owing to the employment of ieee802. 1 q, the ptda of vlan is all - purpose to some extent

    本文的創新之處主要體現在以下四個方面:在單子網物理拓撲發現演算法中，增加了判斷簡單連接的條件，使演算法更加完善;在多子網物理拓撲發現演算法中採用圖的廣度優先遍歷方法、埠刪除方法等，該演算法更加有效;在生成樹協議物理拓撲發現演算法中，正確使用stp 、 snmp和arp三種協議，物理拓撲發現非常準確;在vlan物理拓撲發現演算法中，正確運用了ieee802 . 1q協議，該演算法具有通用性。
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