x-f 中文意思是什麼
x-f
解釋
-
Deng x g, zhuang f g, mao m l. on low mach number perfect gas flow calculations [ r ], aiaa paper 99 - 3317
鄧小剛.粘性超聲速復雜氣動力干擾的數值模擬[ d ] : [博士學位論文] ，中國空氣動力研究與發展中心， 1991 -
Let / be a function from rn to r. following the definitions of the generalized gradients proposed by clarke and xu yihong, respectively, we define the d - regular weak lipschitz function and propose a new generalized gradient as follows where d _ f ( x ; d ) is the directional derivative of / in the direction d at the point x, namely some properties are proposed
第二節引入基本定義和記號，在clarke和徐義紅提出的各自的廣義梯度的基礎上，定義了一類d正則弱l函數，且提出了一個新的廣義梯度。設f ： r ~ n r ，其廣義梯度為其中為f在處沿方向d的方向導數，即並給出了若干性質定理。 -
If you are ambitious, try this alternative procedure: note that f'(x)involves the heaviside stepfunction.
如果你有雄心的話，可以用另外步驟試之：注意f』（X）包含亥維塞階梯函數。 -
If you are ambitious, try this alternative procedure : note that f ' ( x ) involves the heaviside stepfunction
如果你有雄心的話，可以用另外步驟試之：注意f 』 （ x ）包含亥維塞階梯函數。 -
The limit of the integrand f ( x ) of abnormal integral, which is convergent in the infinite range of integration, is not certainly equal zero at infinity
摘要無窮限反常積分收斂時，其被積函數在無窮遠處的極限不一定為零。 -
( 2 ) in the condition of quasi - quadrennial or quasi - biennial oscillation, monthly mean anomaly fields of slp, ssta, x and f have the most important effect on the linear response of nino3. 4, and there exists obvious spatial symmetry among cold and warm events of enso oscillation
（ 2 ）在準4a或準2a振蕩下， slp 、 ssta 、 _ x 、和_ y的月平均距平場對于nino3 . 4指數的線性響應佔主導地位， enso振蕩的冷暖事件間具有明顯的空間的對稱性。 -
In this paper, two questions on exetreme value theory are investigated as follows : i. the asymptotic properties of the large quantile and endpoint of a distribution : let { xi } be an i. i. d random sequence with common distribution f ( x ) which is unknown. denote mn ( k ) as the k - th maxima of x1 … xn
本文對極值理論的兩個問題進行了探討：一、大分位數與尾端點的漸近性質設{ x _ i }是來自未知分佈f （ x ）的i . i . d的隨機序列。 -
Sequence and large sample quality are posed. in our country or allien there are many experts who discusses some quanlity of na variable in great. for example, in documentation 6, there is a discussion about the consistency of density kernel estimation and many results have been g ained, but the density estimation f ( x ) is limited to the arrange of x [ a, 6 ] which limits the arrange of application. thus in this passage we call off this limitation and further discuss the density kernel estimation under na sample. consequently the counterpart results have been gained and the condition of result has been weaked. in the same time we discuss the density kernel estimation under pa sample and the counterpart result has been gained
序列密度函數估計及其大樣本性質的研究課題。國內外許多專家對na變量的各種性質進行了大量的討論，其中文獻[ 6 ]曾對na樣本下密度核估計的相合性進行了討論，並取得了一些結果，但該文將密度估計f （ x ）限制在x [ a ， b ]中進行討論，這局限了應用范圍。因此本文在取消這種限制條件下對na樣本的密度核估計進行了進一步的討論，得出了相應的結果，並使結論的條件得到弱化；同時對pa樣本下的密度估計也進行了相應的討論，取得了相應的結果。 -
One of the main character of this paper is to present a new way of how to use a mountain pass theorem to prove the existence as to the dirichlet problem, without assuming conditions ( ar ), the other is that we have made great improvements as to the important condition of [ 6 ], in other words, we may delete the condition on which f ( x, t ) / t is nbndecreasing with respect to t 0, a. e. x
這篇文章的一個主要特徵是提出一種新的方法運用山路引理證明了在沒有條件（ ar ）的情形下dirichlet問題正解的存在性，另一個是我們對文獻[ 6 ]中的重要條件做了巨大的改進，即我們可刪去f （ x ， t ） / t對a . e . x關于t在[ 0 ， + ）上單調遞增。 -
First, we consider an additive schwarz algorithm for the solution of ax 4 - f ( x ) 0, x when coefficient a is an m - matrix and f ' ( x ) 0. by applying the theory of weak regular splitting of matrices to the above considered algorithm, we obtain the weighted max - norrn bound for iterations. moreover, under the assumption that f ( x ) is concave, we establish monotone convergence of the considered algorithm
本文內容如下：首先，應用加性schwarz演算法求解非線性互補問題，其中a是m陣，應用弱分解理論，我們獲得了在加權范數意義下誤差的幾何收斂速度，在f （ x ）是凹函數的假設下我們還獲得了此演算法的單調收斂性，同時我們給出此演算法的一種修改演算法，無需前面的假設，該演算法具有單調收斂性。 -
In order to calculate easily and do n ' t influence the single - chip microcomputer ' s calculate velocity, we put forward two scheme to deal with the numerical value, one is to use a simple function to close or approach a normal function f ( x ) ( mainly is lagrange ' s intepolation, newton ' s intepolation, hermite ' s intepolation, cubic spline interpolation, etc. ) the other one is function approach ( mainly is chebyshev ' s polynomic. legendre ' s polynomic, laguerre ' s polynomic, method of least squares, etc. ), we analyze and compare the lagrange ' s intepolation and chebyshev ploynomic, at last, we select the chebyshev polynomic to do the value calculating on single - chip microcomputer
提出了數值處理的二種方案。即用簡單函數近似或逼近一個一般函數f （ x ） （主要有拉格朗日插值、牛頓插值、埃爾米特插值、三次樣條插值等）和函數逼近（主要有切比雪夫多項式、勒讓德多項式、拉蓋爾多項式、最小二乘法等） ，對上述兩個方案中的典型函數?拉格朗日插值和切比雪夫多項式進行了分析比較，最後選取切比雪夫多項式完成單片機上的數值計算。 -
By film thickness measured, fourier transformed infrared spectrometer ( ftir ) analysis, x - ray photoelectron spectroscopy ( xps ) analysis and relative irradiance measurement, the effect of microwave input powers on deposition rates, f / c ratios, bonding configurations of ct - c : f films and the radicals in plasma originating from source gases dissociation is analyzed
由於微波功率的改變會導致等離子體中電子溫度和等離子體密度發生變化，從而造成不同的源氣體分解過程，結果微波功率的升高導致了薄膜沉積速率的提高、 f / c比的降低，同時也導致薄膜中cf和cf _ 3基團密度的降低，而保持cf _ 2基團密度接近常數。 -
The order of shade - tolerance from higher to lower was l. japonica, p. armeniace, f. susoensa, q. liaotungensis, x. sobifolia, s. oblata, s. vulgaris, p. tabulaeformis, r. pseudoacacia and p. orientalis
金銀花、山杏、連翹、遼東櫟、文冠果、丁香、臭柏、油松、側柏、刺槐的耐蔭性依次降低。 -
The representation theories of mp - filter which is created by an non - empty set of a implication algebra on a partial ordered set with condition ( c ) are obtained at first. and it ' s proved that the set which contains all mp - filters of a implication algebra x, denoted by mf ( x ) = { f x f is a filter of x }, is a distributive lattice and a complete lattice also in the view of the concept of mp - filter. then the fuzzy filter of a implication algebra is discussed, and the relations between mp - filter and fuzzy filter are obtained
藉助于mp -濾子的概念，得到了偏序集上具有條件（ c ）的蘊涵代數中由非空集合所生成mp濾子的表示定理，證明了由其上所有mp -濾子組成的集合mf （ x ）是一個完備的分配格；得到了蘊涵代數中fuzzy濾子與mp濾子的關系，給出了fuzzy濾子成為fuzzy素濾子的若干刻畫；並利用mp -濾子和fuzzy濾子，刻畫了一類偏序集上蘊涵代數的結構。 -
X. f. zhang and z. zhang, “ progress in transmission electron microscopy : i. concepts and techniques ; ii. application in materials sciences ”, ( tsinghua university press and springer - verlag, beijing, singapore ; sep. 1999, 870 pages )
「電子顯微學進展: i概念和技術； ii材料科學中的應用」 ， （清華，德國斯普林格出版社，世界發行， 1999年，共870頁） -
X. m. fang, x. h. chu, x. f. zhao, guo x. l., xu n. y. （ 2005 ）. mapping cacna1s to chromosome 10 in swine using radiation hybrid mapping. animal genetics, 36, 437
方曉敏，郭曉令，徐寧迎（ 2005 ） 。輻射雜種細胞系及其在基因定位中的應用（綜述） .畜牧與獸醫。 -
42 wang h x, meng x f. on the sequencing of tree structures for xml indexing. icde 2005, tokyo, japan, pp. 372 - 383
在xml管理方面我們研製了orientx系統，研究的xml數據的直接存儲模式管理索引管理和查詢引擎等諸方面都有獨到之處。 -
10 wang s, meng x f, liu s. nchiql : a chinese natural language query system to databases. international symposium on database applications in non - traditional environments, dante 99, kyoto, japan, pp. 453 - 460. 11 meng x f, wang s, wong k f. overview of a chinese natural language interface to databases : nchiql
在自然基金重點項目的支持下，我們在中文數據庫環境下，對可移植性體系結構領域知識提取受限中文查詢語言的設計實現自然語言查詢分析處理智能界面管理等方面進行了深入的研究，取得了卓有成效的研究成果。 -
Orienti : a strategy of web information integration. wuhan university journal of natural science, sept. 2004, 9 : 659 - 664. 40 meng x f, luo d f, lee m l, an j. orientstore : a schema based native xml storage system
我們提出了sg - wrap工具來產生包裝器，實現數據的自動抽取，在此基礎上，提出sg - wram來實現包裝器的自動維護orienti是國內第一個web數據集成系統，能夠在信息集成基礎上有效構建靈活的應用。 -
47 ding z m, meng x f, wang s. a novel conflict detection and resolution strategy based on tlrsp in replicated mobile database systems
基於移動數據庫的特性，提出移動事務模型o2pc - mt和移動數據庫復制機制，並研究了微小數據庫的存儲和查詢技術。
分享友人