例句與造句

1. Abstract : the nr - bp methed was wsed for the si mulated calculation of cryogenic purifier distillation . the results of calculatio n showed that this method possessed the advantages of low initial estimate value s ， rapid and steady convergence and so on , and were in good agreement with the d es ign values of referance
   文摘:采用新松弛法( nr )與泡點(diǎn)法( bp )結(jié)合對(duì)深冷凈化精餾塔進(jìn)行了模擬計(jì)算.計(jì)算結(jié)果表明，該法具有初值要求不高、收斂穩(wěn)定、收斂速度快等優(yōu)點(diǎn)，并與文獻(xiàn)設(shè)計(jì)值吻合很好
2. The new algorithm starts from an initial estimate which is based on the hough transform , and a rectangular window is centered using the current line approximation , and a new line estimation is generated by making a total least squares fit through the pixels contained within the window . this is repeated until convergence is reached . lastly , we have suggested a new technique which may recover the motion and structure parameters of a moving object by using of 21 optical flow lines based on the optical flow fields of the feature line this thesis is the project supported by aeronautical foundation science ( no . 99f53065 ) and research center of measuring and testing technologies , and control engineering in nanchang institute of aeronautical technology ( no . 2001 - 15 )
   算法的思路是：首先，在小區(qū)域內(nèi)運(yùn)用霍夫變換確定直線的初始值；其次，以直線的初始值所對(duì)應(yīng)的直線為中心線，建立一個(gè)矩形框；最后，利用矩形框內(nèi)所包含的邊緣點(diǎn)數(shù)據(jù)不斷地迭代直至收斂，從而達(dá)到進(jìn)一步修正直線的坐標(biāo)參數(shù)；本文基于特征直線的光流場(chǎng)，即線流場(chǎng)，建立了一種利用21條光流線確定空間三維物體旋轉(zhuǎn)運(yùn)動(dòng)參數(shù)、平移運(yùn)動(dòng)參數(shù)以及對(duì)應(yīng)的空間直線坐標(biāo)的線性算法。
3. It's difficult to find initial estimates in a sentence. 用initial estimates造句挺難的
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