index path 中文意思是什麼
index path
解釋
光路圖，測量儀器-
This study was conducted to examine the interrelationship of 10 seed vigor traits in 12 wheat genotypes through variance, co - variance and path coefficient analysis, to determine broad - sense heritability, and to estimate genetic advance under selection. the genotypes showed significant difference for all traits, except for percentage of normal seedling. genetic correlation between conversion efficiency of seed reserve, electrical conductivity with other traits were not significant, showed that selection for any of them might be possible without hampering any other traits. however path coefficient analysis indicated that conversion efficiency of seed reserve, seed reserve utilization ratio have strong direct effect in affecting seedling weight, and that mean germination time has significantly negatively correlated in affecting gi. moderate to high estimates of broad - sense heritability, genetic coefficient of variation and expected genetic advance were obtained for electrical conductivity, germination index, mean germination time, seed dry weigh, seedling dry weigh, seed reserve depletion ratio indicating the possibility for improving these traits
本研究利用12個普通小麥品種對10個種子活力性狀的遺傳變異和相關研究，表明除正常幼苗百分率外，其餘種子活力性狀在品種間均存在顯著的差異.種子貯藏物質轉換效率、電導率兩個性狀間及與其它性狀均無顯著的遺傳相關，因此對他們的選擇不會影響到其它性狀.通徑分析表明幼苗干重主要取決于種子貯藏物質轉換效率、種子貯藏物質利用速率;發芽指數主要由平均發芽時間決定.電導率、發芽勢、幼苗干重、種子干重、發芽指數、種子貯藏物質消耗比率6個性狀表現中到高的遺傳力、遺傳變異系數和相對遺傳進展，指明通過遺傳育種手段改良這些性狀是可能的 -
Because of the digitally rebalanced circuit, the sensor is capable of achieving better static and dynamic characteristic, higher sensitivity and stability. in this paper, the propagation path of light in the step index fiber and graded index fiber is introduced firstly. then the paper sets up the coupled power model and develops the coupling function
在文中，首先介紹了光線在階躍型光纖和梯度折射型光纖中的傳播路徑，以及在一端鍍有反射膜的1 4波節長度的grin透鏡中的成像規律，並推導了光功率耦合函數。 -
Firstly, a ~ ( h ) save some path information for each node as add - ons and build hash index on these information, then a ~ ( h ) use these information to reduce time complexity of all computing above
該演算法將一些路徑信息作為每個結點的附加信息預先保存起來，並對這些信息建立hash索引。 -
The wiener index of peptoids, when the fragment graph is a path, has been calculated, see the reference [ 40 ]. we study the wiener index of peptoids, when the fragment graph is more complicated : a complete graph, a wheel, a cycle and a circulant graph. we get the exact expressions for them
有關類肽圖的骨架圖為路徑時的wiener數的計算結果已經有了，我們研究的骨架圖為比較復雜的幾個：完全圖、輪、圈和循環圖等，並獲得了它們的wiener數的顯式表達式。 -
In the path secondary index, the path and node values are key columns that allow for more efficient seeks when searching for paths
在path輔助索引中，路徑值和節點值是允許在搜索路徑時使用更高效的查找功能的鍵列。 -
On the basis of considering the influences upon the conveyance motion of solid phased particles affected by parameters of motive path of sieve chest, inclination of sieve surface, azimuth of vibration, throwing index and adhesive resistance of well drilling liquid etc., the kinetics equations of conveyance speed and displacement of solid phased particles were established
在考慮篩箱運動軌跡、篩面傾角、振動方向角、拋擲指數和鉆井液粘附阻力等參數對固相顆粒運移影響的基礎上，建立了固相顆粒運移速度和位移的動力學方程。 -
3 the author analyzes the productive and opening potential and forecasts the demands of some kinds landuse and draws some conclusions : ( l ) the main cause for low production and income is the shortness of water and the poor fertility of land ; ( 2 ) constructive land is not suitable for farming and should be used for economy construction, and this is the main path to keep the total number of plantation in balance. 4. according to the land use, the author discover the unsustainable factors and use synthetical index method to evaluate the sustainability of landuse and the results are these : ( l ) synthetical and monomial value increase gradually with the change of time and sustainable degree of landuse rises year by year ; ( 2 ) the artical compartmentalizes the sustainable landuse into four grades : prophase, primary period, basic period and sustainable period according to the synthesical value with 30 %, 60 % and 85 %
4根據酉陽縣土地資源利用現狀，在評價模型採用綜合指數法進行評價的基礎上，結合單指標多角度評價法，找出土地利用過程中存在的不可持續性因素，採用綜合指數法對酉陽縣土地資源進行可持續利用評價，結果顯示: （ l ）綜合評估值隨時間變化呈增加的趨勢，而且單項指標的評估值也逐漸提高，可持續利用度在逐年上升; （ 2 ）根據事物發展階段論，按綜合評估值為30 % 、 60 %及85 %將酉陽縣土地可持續利用劃分為可持續利用的前期階段、初期階段、基礎階段和持續階段等四個等級，從酉陽縣1980年、 1990年以及2000年總的土地可持續利用綜合評估值來看，酉陽縣到2000年土地利用管理仍處在可持續利用管理的初期階段，離土地可持續利用的目標還相差較遠。 -
A distant field interference of non - single - core light beams is analysed in a transparent liquid or solid when the bubble is irradiated with laser, a formula on optical path length difference is derived, interference regions and causes of interference rings thick inside and thin outside are analysed, the diameter of bubble can be measured by method of interference, the size of bubble and refraction index of gas inside the bubble can be measured in the depths of medium
摘要對透明液體、固體中氣泡在激光照射下產生的一種非單心光束干涉進行了遠場分析，得到了程差公式，分析了干涉的區域、圓環狀干涉條紋內密外疏的原因，通過干涉的方法可以測量氣泡的直徑，能夠用於介質深處氣泡尺寸及泡內氣體折射率的測量。 -
The indexes are very important in xml query. the expenses of estimating the xml query generally only consider cpu expense and i / o expense, while i / o expense largely depends on the statistical information in xml data, which relate with path directly recorded in the path index
在xml查詢中，索引的作用至關重要， xml查詢的代價估算一般只考慮cpu代價和i / o代價， i / o代價的估算在很大程度上依賴于xml數據的統計信息，而這些信息都和路徑有關，可以直接記錄在路徑索引上。 -
Path name to the main storage file. the names for supplemental files, including index and lock files, will be computed from this
主存儲文件的路徑名。追加的文件名稱，其中包括索引和鎖文件，都是從這里計算的獲得的。 -
And the path is not fully specified or it includes a wildcard, you might obtain faster results by building a secondary xml index that is built on node values in the primary xml index
，且沒有完全指定路徑或路徑包含有通配符，則生成基於主xml索引中的節點值所創建的輔助xml索引可以更快地獲得結果。 -
Method. if the path is found in the path column in the index, the
如果路徑是在索引中的path列中找到的，則從主xml索引檢索< -
In this case, having a secondary index built on the path values and node values in the primary index can significantly speed up the index search
這種情況下，對主索引中的路徑值和節點值生成輔助索引可以有效地提高索引搜索的速度。 -
Type columns, a path secondary index may be able to speed up the search
類型列指定路徑表達式，則path輔助索引可以提高搜索的速度。 -
5 ) we study a new index structure, structural map, for efficient evaluation of path expressi
5 ）本文還研究了一種有效支持xml路徑表達式查詢處理的路徑索引一結構映射。 -
This essay first dicussed the key steps of preprocessing in web log mining, which include data abstract, data cleaning, user and session identification and path completion etc. especialy we proposed the algorithm of the web log data preprocessing include frame page. and secondly we discussed the technology of building an adaptive web site, include log data cluster mining, user visiting pattern learning, site structure transformation and presentation etc. ; and we proposed indual user log visiting pattern, user model onling learning algorithm, index pages synthesising algorithm, site structure transformation and presentation algorithm and so on
本論文首先討論了web日誌挖掘預處理中的各步驟：數據抽象、數據清洗、用戶與會話識別、訪問路徑補全，給出了每一步驟的演算法實現；並特別討論了含有frame頁的日誌數據預處理過濾演算法。其次討論了構建自適應站點技術，包括日誌數據聚類挖掘、用戶訪問模式學習、站點結構轉化與呈現等；提出了單用戶日誌訪問模型，給出了用戶模型在線學習演算法、索引頁面綜合演算法、站點結構轉化及呈現演算法等。 -
According to the theory of optical wave propagation in the slant path and the itu - r turbulence structure constant model, which is altitude dependent and proposed in 2001, the modified rytov method is extended to be applied to study on the problems, which waves propagate in the slant path. the scintillation index as a function of the rytov variance is obtained from weak to strong fluctuation regions with plane wave and sphere wave incidence, respectively
根據斜程傳輸理論和2001年提出的itu - r湍流大氣結構常數模型，將修正pytov方法推廣應用於斜程傳輸問題研究，得到了平面波和球面波斜程傳輸時的閃爍指數，分析了湍流內尺度、近地面風速等參量對閃爍指數的影響。 -
Method correspond to the key fields of the path index
對應于path索引的鍵欄位。 -
Predicting gas chromatography retentiong index for sulfides by a new topological index and numbers of path
拓撲指數與路徑數預測單硫醚氣相色譜保留指數 -
The paper puts forward a combined - allocation - scheme based on the idea of constrained - block - allocation at the storing allocation strategy and gives disk - striping about the storing of big capacity disk array. in the study about the access path of the multi - media data, we introduce several kinds of representative multi - dimensions data index structure including k - d tree, r tree, vp tree and so on. ( 3 ) the research of multi - media database system architecture.
在存儲分配策略上根據受限塊分配（ constrainedblock ? allocation ）的思想，本文提出了聯合分配模式（ combinedallocationscheme ） ；並針對大容量磁盤陣列的存儲給出了條形分配方案（ diskstriping ） ；在多媒體數據的存取路徑的探討中，重點介紹了幾種有代表性的多維數據索引結構，有k - d樹、 r *樹、 vp樹等。
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