tangent function 中文意思是什麼
tangent function
解釋
切線-
The graph of a concave function is always below its tangent.
一個凹函數的圖象總在它的切線的下方。 -
It supposed that the circle of sliding surface run through the foot of slide. the factor of safety is transmitted to the function of x coordinate of the intersection point of the tangent at the scrap of the circle and x axis. so, the two - dimension area of searching is changed to one - dimension
該方法先固定潛在滑動圓弧的上、下邊界點，利用滑弧后緣處的切線與x坐標軸交點的位置確定了滑弧的曲率，將二維搜索麵域簡化為一維搜索線域，搜索的上、下限有嚴格的界定，不存在漏點問題。 -
A method based on the application of an injection process analysis software is introduced in this article, which optimize injection process through changing the design of fuel - injection pump cam. a model of 1115 single cylinder direct injection diesel engine is used as an example. with the help of pre - journey optimization, increasing cam lift and using tangent - function can make the matching of the injection system with the diesel more reasonable. without changing fuel pump installing size, it can enhance injection rate and injection pressure and improve the diesel operating stability in low speed condition
本文以國產1115型單缸直噴柴油機為例，介紹一種應用噴油過程分析軟體改進噴油泵凸輪設計的方法，通過增大噴油泵凸輪升程、採用切線函數凸輪並優化預行程的方式，在不改變噴油泵安裝尺寸的前提下，可提高噴油壓力和噴油速率，改善柴油機低速工作穩定性，使噴油系統與柴油機匹配更合理。 -
This principle is a lettle like centrifugal pump. when runing, stock enters via the center of tubine wheel, and then under the function of centrifugal force is flung to the direction of tangent and drains out through specified channel
其作用原理類似離心泵，運轉時漿料從渦輪中心吸入，由於離心力的作用，被甩到葉輪的切線方向，經特定的腔道流出。 -
The results of numerical experiments, using the four - dimensional variational data assimilation system of the nonhydrostatic mesoscale model mm5, show that : the tangent linear model and adjoint model conducted by keeping the " on - off " switches the same as the basic state, can provide a good approximation of the first - order information to the nlm perturbation and a good descent direction for the minimization procedure ; switching on and off at every other time step in the kuo cumulus parameterization scheme do n ' t impact the convergence rate of cost function ; the existence of the switches do n ' t impact improvement to the mm5 model rainfall prediction because that not only specific humidity, but also wind, temperature and pressure are assimilated into the model
非靜力中尺度數值模式mm5的四維變分資料同化系統進行的數值試驗結果表明： 「開關」變量保持與基態一致，所構造的切向線性模式能夠提供關于非線性模式擾動的一階近似，伴隨模式所計算的梯度值能夠為最小化過程提供較好的下降方向；郭氏降水參數化方案中對流每隔一個積分步的交替發生並不影響目標函數最小化的收斂速度； 「開關」變量的存在也不影響將風、溫度、氣壓和比濕結合起來同化對mm5降水預報準確性的提高。 -
A theoretical model for predicting ground displacement and deformation due to mining of phosphate body in wenjiaping by using hyperbolic tangent function was given in this paper
摘要針對文家坪磷礦地下開采巖體移動變形問題，給出了用於預測分析地下開采引起地表移動變形的雙曲正切函數模型。 -
In this dissertation, the fact that the concepts of tangent modulus factor ( _ ( 1 ), ), proportional limit law ( pll ) and strength utilization ratio function ( surf ) in the combined theory of strength and stability ( ctss ) are the extension of concerned concepts in elastic mechanics is illustrated
本文說明了強度穩定綜合理論中的切線模量因子、比例極限定律和強度利用率函數等概念是彈性力學有關概念的延伸，既可以用於強度理論，也可以用於穩定理論。 -
The mathematics - mechanization method is applied the field of differential equations. many algorithm for constructing solitary wave solutions for a class of nonlinear wave equations are given, and implemented in a computer algebraic system, such as the hyperbolic tangent function method and the hyperbolic function method etc. exact solitary wave solutions of a great deal of nonlinear equations are gained
將機械化數學方法應用於偏微分方程領域，建立了構造一類非線性波方程的精確孤立波解的許多演算法，如，雙曲正切函數展開法，雙曲函數方法等，並在計算機數學系統上加以實現，因而推導出了一批非線性波方程的精確孤立波解。 -
One of most effectively straightforward methods to construct travelling solitary wave solutions is tanh - function method. the algorithm is based on the fact that the solitary wave solutions are essentially of a localized nature. seeking solitary wave solutions which are in terms of hyperbolic tangent function gives a nonlinear system of algebraic equation
尋求非線性演化方程孤波解的雙曲正切方法是直接代數方法中最為有效的方法之一，其基本原理是利用非線性演化方程孤波解的局部性特點，將孤波解表示為雙曲正切函數的多項式，從而將非線性演化方程的求解問題轉化為非線性代數方程組的求解問題。 -
Chapter5 : the recently developed method of hyperbolic tangent function expansion is extended and new function transformation is applied to construct some new solitary solutions of kdv equation and klein - gordon equation and the jacobi elliptic function expansion method, which is advanced in 2001, and the extended method of doubly jacobi function expansion are used to construct the exact solutions of a kind of nonlinear evolution equations
第五章對近年來發展起來的雙曲正切函數展開法加以改進，採用新的變換函數，得到了kdv方程和非線性klein - gordon方程的一些新的孤立波解。其次，分別採用2001年提出的jacobi橢圓函數展開法和本文由此擴展而來的雙橢圓函數展開法，求解了一大類非線性發展方程，得到了一系列新的周期解。 -
To deblur edge after image magnifying, an adaptie edge sharpness presering image magnification is put forword, which can fit edges of any direction, gradient and amplitude, utilizing the gradient imgormation of the image and the properties of the hyperbolic tangent function haing reiewing the character of a typical edge
針對圖像放大后出現邊緣模糊的現象，論文考察了典型邊緣的特徵，利用圖像的梯度信息和雙曲正切函數的性質，提出了一種較好地擬合任意方向、陡度和幅度的邊緣，因此能夠保持邊緣銳度的自適應圖像放大演算法。 -
The atanh ( ) function returns the inverse hyperbolic tangent of an angle
函數的作用是：返回一個指定角度參數所對應的反雙曲正切值。 -
Arc - tangent function
反正切函數 -
Inverse tangent function
反正切函數
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