density unknown 中文意思是什麼
density unknown
解釋
未知光密度-
107 + 2. 819x ( serotype l ), log [ et reciprocal ] = 1. 019 + 2. 935x ( serotype 2 ), ( 3 ) log [ et reciprocal ] = 0. 99 + 2. 709x ( serotype 4 ) and log [ et reciprocal ] = 1. 052 + 2. 953x ( serotype 5 ). the derived regression lines ( equations ) were used to transfer the optical density value ( od ) obtained from a single 1 : 100 dilution of any unknown serum sample of duck into elisa titer. the indirect elisa technique were used to monitor the variety of the mean antibodies titers of vaccinated ducks with the oil - emusified formalin - inactived r. a
間接elisa方法的靈敏度是微量凝集試驗的50 - 100倍（血清1型鴨疫里默氏桿菌） ， 25 - 100倍（血清2型鴨疫里默氏桿菌） ， 12 - 100倍（血清4型鴨疫里默氏桿菌） ， 25 - 200倍（血清5型鴨疫里默氏桿菌） 。 -
Gene chips is high density probe array which is composed of nucleic acid or nucleic acid band arranged on the solid support media according to the definite order. it can detect unknown molecule by nucleic acid hybridize principle
基因晶元是將核酸或核酸片段按照一定的順序排列在固相支持物上構成高密度探針陣列，利用核酸雜交原理檢測未知分子。 -
Unknown displacement jumps in the equations are approximated with the products of the fundamental density functions and polynomials, in which the fundamental density functions are expressed with exact solutions of the two - dimensional interface cracks due to axial - symmetries of the problems herein
方程中的未知位移間斷近似表示為基本密度函數與多項式之積，其中基本密度函數考慮到問題的對稱性用二維界面裂紋精確解表示。 -
In the numerical calculation, the unknown function is approximated by the product of basic density function and polynomials
根據裂紋面上位移函數的分佈特性，通過將位移間斷函數表示為特徵函數和一組多項式乘積的形式，為其建立了數值方法。 -
Finally, a new kind of methods on how to classify a sample into one of the several known populations in terms of posterior probability ratio established by the sample ' s predictive density functions when the unknown parameters " prior distributions are diffuse prior and minnesota prior or normal - inverted wishart distribution
最後，利用參數的充分統計量，根據后驗概率比構造了一類新的基於擴散先驗分佈和正態?逆wishart先驗分佈的多總體貝葉斯分類識別方法。 -
Moreover, the longitudinal piece is higher twist ( suppressed by a factor i / a / 2 ). the dipole cross section is largely unknown, only at small distance p it can be expressed in terms of gluon density
偶極截面只有在小距離時才能表示成膠子密度的函數，在整個范圍內求解偶極截面，需要解非常復雜的演化方程，目前是不能做到的。 -
Unknown displacement and electric potential jumps in the integral equations are approximated with a product of fundamental density function and polynomials, in which the fundamental density function reflects singular behavior of electroelastic fields near the crack front and the polynomials can be reduced to a real constant under uniform loading
超奇異積分方程中的未知位移間斷和電勢間斷近似地表示為基本密度函數與多項式之積，其中基本密度函數反映了橢圓片狀裂紋前沿電彈性場的奇異性，而多項式在均布載荷作用下可用一個常數來表達。 -
For many practiced instances, the type of the probability density function is unknown. so density estimation is nonparametric estimation
對于很多實際情況， hmm密度函數所屬類型並不知道，此時的密度估計就是典型的非參數估計問題。 -
The density of the universe is still unknown. one of the major problems is the existence of
要準確量度宇宙的質量密度非常困難，最大的障礙來自宇宙的
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