查询词典 structural formula

They concluded that the derivative-free formula is not exact under the assumed conditions, but it is a very good approximate reconstruction formula.

黄朝志等发现在1993年发表的非圆轨迹不含导数的扇束重建公式推导中的一个错误他们的结论是：在假设的条件下，不含导数的重建公式不是精确的，但是一个很好的近似重建公式。

The result shows that frequency calculated using the finite element modeling is closed with those calculated by formula, which has proved approximate formula has very high accuracy.

研究结果表明：采用有限元建模计算基频，其结果与公式计算结果接近，证明近似公式计算精度高。

In some areas,the liquid limit and plastic limit has approximate lineal relevant formula, expressed formula as like this ω P=a+bω L.

这样用液限就可直接计算塑限，是简捷快速、提高效率的较好方法。

In some areas,the liquid limit and plastic limit has approximate lineal relevant formula , expressed formula as like this ω P=a+bω L.

液塑限试验是土工试验的重要项目之一，塑限试验一般用手工操作、人为因素大、效率低，但局部地区塑限与液限却有如ωP＝a＋ bωL 的近似线性相关公式。

The reliable of FCT was calculated respectively by using narrowcasting formula and approximation calculus formula.

利用独立的失效概率为q的Bernoulli试验序列、概率公式和递增凸函数的性质推导出了钻井油气层测试器的可靠度的近似计算公式。

The approximation calculus formula of reliable on FCT was calculated by using abate probability being q Bernoulli test sequence, probability formula and property of increasing convex function.

应用概率理论推导出钻井油气层测试器系统的可靠度精确计算公式。

Around AD 1000, the Islamic mathematician , Ibn al-Haytham, was the first to derive the formula for the sum of the fourth powers of an arithmetic progression , using a method that is readily generalizable to finding the formula for the sum of any higher integral powers, which he used to perform an integration.

公元1000年，伊斯兰数学家，伊本Haytham ，是第一个公式推导的总和第四权力算术级数，使用方法很容易推广找到公式的总和任何高积分的权力，他用来执行一体化。

The formula was sold to Alkali Neutralizer Company based in the Los Angeles area in 1947 where Ashford Formula was extensively specified by architects and engineers and used on all types of industrial floors and parking decks.

其配方在1947年被位于洛杉矶的"碱中和剂"公司收购，在那里A/F被建筑师和工程师指定并广泛地用于各种类型的工业地坪和停车区域。

The main contributions in this area are summarized as follows,? The closed-form formula and its asymptotic form of system outageprobability are derived, through which it is shown that the outage probability decreased by a factor ofγ~(hereγdenotes the average SNR);? The closed-form formula of outage capacity is derived, through which weshow that 1 outage capacity increases with the increases of mean value of sytem SNR, and decreases with the increase of the variance of system average SNR; 2 in order to obtain higher outage capacity, the number of transmit antenna should be no more than that of receive antennas.?

特别的，针对多用户发送天线选择／最大比合并系统，主要贡献总结如下：·理论推导出中断概率的闭式解及其近似解，通过该近似解，可以得到中断概率以γ~的形式减少(这里γ是平均信噪比SNR)·推导出平均中断容量的闭式表达式，研究表明：1中断容量随着有效平均SNR的均值的增加而增加，随着有效平均SNR的方差的增大而减小；2为了获得更高的中断容量，发送天线的数目应当不大于接收天线的数目。

For any positive integer n, about the Smarandache LCM dual function SL*, the main purpose of the fifth Chapter is using the elementary method to study the calculating problem of a Dirichlet series involving the Smarandache LCM dual function SL* and the mean value distribution property of SL*, obtain an exact calculating formula and a sharper asymptotic formula for it.

对于给定的自然数n，关于Smarandache LCM对偶函数SL~*，本文第五章利用初等方法研究了一个包含SL~*的Dirichlet级数计算问题及SL~*的均值性质，分别给出了精确计算公式和一个较强的渐近公式。

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。