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empirical formula 【化學】實驗式,經驗式。

empiricism

Based on previous study of pollutant dispersion in vertical direction , an empirical formula for determining the mean value of turbulence viscosity coefficient in numerical simulation of tides in vertical direction was worked out and applied to 3 - d numerical simulation of tides for changxing island reach in yangtze river estuary 摘要在已有污染物垂向擴散過程研究的基礎上,提出了確定潮流數值模擬中垂向紊動黏性系數的垂線平均值的經驗方法,并將此方法應用到長江口長興島段的潮流三維數值模擬中。

Abstract : the climate general situation of the highest temperature , relative humidity and wind speed in relation to the body feeling temperature from june to september in qingdao city was analysed statistically . according to the calculating model of body feeling temperature and distribution characteristic of relative meteorology elements , an empirical formula was derived . the body feeling temperature distribution in different scopes corresponds to different hotness index and comfortable feeling of outdoor people 文摘:統計分析了青島市區夏季( 6 9月)與體感溫度關系密切的最高氣溫、相對濕度和風速的氣候概況;根據體感溫度的計算型式和有關氣象要素的分布特征,得出其經驗計算公式;分布在不同區間內的體感溫度對應著不同的暑熱指數及戶外人群的舒適感受。

( 5 ) based on an empirical formula , in terms of soil shear velocity , to evaluate soil liquefaction , which is simple to handle and prospective in further application , the author presents , in the probabilistic and fuzzy way , the formulae for the evaluation of liquefaction probability and fuzzy probability at given depths and for a fuzzy evaluation of liquefaction hazard of the total soil layers 討論了當剪切波速具有隨機性時液化的發生概率,進而給出了確定場地液化和危害程度的發生概率,在此基礎上,結合液化和液化危害程度(等級)的模糊性,利用模糊事件的概率分析方法,提出了可同時考慮隨機性和模糊性場地液化和液化危害性的發生概率的計算方法。

The rudiment rules of the factors on the subway residual deformation are found and a empirical formula for the subway residual deformation is given , which can consider the unit weight of the subway tunael , the intension of earthquake . all of these sophisticate the theory of the design of subway tunnel 發現了它們對震后殘余變形影響的初步規律,并給出了一個能考慮隧道埋深和地震設防烈度的地鐵隧道震后殘余位移經驗公式,為完善地鐵抗震設計理論提供了依據。

In the stochastic hill - climbing , the number of climbing is an important parameter , and is different to get a good value . this paper use experimental technique to settle this question . it use the least square method find a polynomial empirical formula , which can compute the number of climbing 另外,針對savior算法中隨機爬山法爬山次數難以確定的問題,本文采用多項式最小二乘擬合,利用實驗方法得到了問題規模和隨機爬山法合理爬山次數間的經驗公式。

Although the empirical formula ? = yh [ 14 . 7 ( rwrlogd ) + 3 ] has been applied successfully to some engineerings , but it is a general formula , not one specially for rocky bank slope in gorge area . so the author constructs a statistical formula smr 71n (只log0 ) + 13 ]在工程實踐中的應用效果較好,但該公式是建立在大量統計資料上的通用公式,并不專門針對峽谷區橋基岸坡,因此作者基于smr方法,統計擬合出適用于峽谷區橋基岸坡的經驗公式?夕: 2

But current domestic evaluation of along railway ' s environment vibration and forecast method still focuses on the site experiments and empirical formulas , lacking of systematic study and quantitative analysis ; therefore we cannot conduct design and execution effectively before construction 而目前國內對沿線環境振動的評價、預測方法仍以現場實測和經驗公式為主,缺乏系統的研究和定量的分析方法,因此不能在建設前有效地指導設計及施工。

But current domestic evaluation of along railways “ environment vibration and forecasts “ method still focuses on the site experiments and empirical formula , lacking systematic study and quantitative analysis , therefore we cannot conduct design and execution effectively before construction 而目前國內對沿線環境振動的評價、預測方法仍以現場實測和經驗公式為主,缺乏系統的研究和定量的分析方法,因此不能在建設前有效地指導設計及施工。

Since these methods have some inconvenience in practice , a new method , which included some empirical formula to analyze the stability of soil slopes with the rheology of soil considered , is put forward and with the present method , combining indoor experiments , the stability of a practical slope is analyzed 結合軟土流變的室內試驗,提出了一種采用經驗公式同時考慮流變的土坡穩定性分析法,并對某工程土質邊坡穩定性進行了分析論證。

Based on the analytical model of the generalized force spectra of the first mode of typical lattice towers in along - wind direction , simplified empirical formulae to evaluate along - wind dynamic responses of lattice towers under wind load are proposed in this paper 摘要基于格構式塔架順風向一階廣義荷載譜解析模型,提出了格構式塔架順風向風振響應簡化計算公式,這些簡化公式將求格構式塔架順風向風振響應的復雜積分變為簡便的代數運算。

It also introduces design theory about paver working characteristics and states design method and calculation formula for travelling , bar conveyer , screw conveyer , vibratory rammer , vibration screed , hydraulic system and electric system some empirical formulas and design parameters are presented 并完整地介紹了行走、刮板、螺旋、振搗、振動、液壓、電氣等系統的設計方法和計算公式,同時還推薦了一些經驗公式和設計參數。

We analyzed the polarizing character , threshold condition , raman shift of srs in different polarizing pumping light . in addition , the empirical formulas on stimulated raman scattering are given . theoretical analyses and experimental results are in good agreement 對它們在不同偏振態泵浦光激勵下各級stokes的偏振特性、閾值條件、喇曼頻移等各參數進行了分析,并給出了經驗公式,其結果和實驗數據符合良好。

In the curve ( empirical formula ) , the concrete rebound value with wide randomness is a dependent variable , while the compressive strength value with narrow randomness is an independent variable , and a location parameter is added , so it is more suitable for engineering practice 將隨機性較大的混凝土回彈值作為因變量,隨機性較小的抗壓強度值作為自變量,并且增加了一個位置參數,更加符合工程的實際情況。

It is shown by analyzing large test data that the empirical formula presented in the paper has higher linearly dependent coefficient , lower average relative error and relative standard deviation compared with the traditional empirical formula of orthoscopic and power function 試驗數據表明,本文提出的經驗公式比傳統的直線式和冪函數式經驗公式的線性相關系數更高,且平均相對誤差和相對標準差都低。

To make the control system feasible and easy to operate , a new scheme is put forward . the acceleration information of the top deck motion is used as input data and an empirical formula is used to obtain the optimum parameters of the vstmd 此方法在不降低控制器效果的前提下簡化了優化程序,提高了運算速度,更有利于平臺振動的實時控制,實現控制系統對結構振動的最優控制。

The detonation speed of 8701 explosive is measured and accords well with that obtained by empirical formulas used in the text . optical photographing is used to verify the expansion process of the armature , and shows fair agreement with the fe calculation results 炸藥爆速測量結果與文中使用的經驗公式相符,光學照相方法得到的電樞膨脹過程與文中有限元計算的結果吻合。

If the characteristic curve of water seepage of abroad empirical formula is adopted , seepage characteristic of several soils can be simplified , the moist curve of underground water caused by the action of outside factors can be also confirmed in the meantime 同時考慮國外經驗式的水分滲透特性曲線,確定由外力因素引起的填方路堤內部的水位濕潤線分布曲線。

The empirical formula in the process of the secondary emission is analyzed ; the stabilization condition of vacuum surface flashover is deduced . the physics image of the vacuum surface flashover is described with the seea theory 本文分析了二次電子發射過程的經驗公式,推導了真空表面閃絡的穩定條件,以seea理論的觀點描述了真空表面閃絡發生的物理圖象。

An improved formula based on huang ' s empirical formula was proposed to calculate the effective permittivity of chemical reaction at any temperature and reaction time by means of the temperature dependent number of molecules per unit volume of reaction solution 基于反應溶液中單位體積內的分子個數隨溫度變化的情況對黃卡瑪提出的經驗公式進行了改進。