And, as before, this comes from the fact that the mixed second derivatives are the same, no matter in which order you take them.
和以前一样，它来源于这样一个事实，混合二阶导数，求导次序改变，结果不变。
The second is a mixed traffic system: fully automated vehicles would share the road with partially automated or manual driven cars.
第二个是一种混合交通系统：完全自动化的车辆将与部分自动化或手动驾驶的车辆共享道路。
The overview sections have changed little from the second edition, but they still provide an adequate introduction to the Perl language, mixed with "the appropriate amount of fun."
本书的概述部分与第二版仅有少许不同，只是在介绍Perl语言的同时，适当添加了一些有趣的东西。
In Europe, cocktail or mixed flavours rank behind orange due to their strong presence in still drinks and nectars, but globally the second most dominant flavour is lemon.
在欧洲，鸡尾酒和混合口味饮料排在橘子味之后，这是因为他们仍然保留着对冲调饮料和调味饮料的强烈热爱。但是就全球市场来说，占第二位的是柠檬口味。
Send the Particles recycled material which is mixed well, to the feeder of the sheet machine, processing of the second sheet producing, in this way continuous processing cycle.
把拌合好的颗粒料回料，再输送到片材机的料斗里面进行第二次加工片材。就这样连续加工循环。
According to the principle, potential coefficients can be obtained directly in solving the mixed boundary value problems of first, second and third type.
根据这一原理可解第一、第二和第三边值问题的混合边值问题直接求得位系数。
Badminton is an Olympic sport for the second time and the mixed doubles competition makes it all-medal sport for the first time in Atlanta.
在亚特兰大，羽毛球第二次成为奥运会正式比赛项目，混合双打的出现使羽毛球首次成为奖牌齐全的运动。
In this paper, Laplace transform is applied to solve a solution of mixed question which satisfies the second boundry condition of the wave equation.
本文应用拉普拉斯变换，求出了一个波动方程第二边界条件的混合问题的解。
In the second part, with the mixed emulsifier and the method of ultrasonic emulsification, the waste coal tar pitch was used to produce emulsified fuel.
第二部分内容采用混合乳化剂和超声乳化法，以炭素厂废煤沥青为原料生产沥青乳化燃料。
Based on the second order statistics, an algorithm is proposed to separate mixed complex-value signals online.
基于二阶统计量，对在线分离复值混合信号法进行了研究。
Learning strategies have attracted the attention of second language researchers and studies in this area have generated mixed findings.
学习策略已经引起第二语言研究者们的注意，而此方面的研究所得结论不一。
The results indicated that the effect of mixed masson pine and oak forest on soil amelioration was the best, that of grass was the second and the pure masson pine forest was the worst.
结果表明：松栎混交林对土壤的改良效果最好，草地次之，马尾松纯林则较差。
Britain was the second country which came up with the concept of grain alcohol mixed with petrol.
英国是第二个提出酒精与汽油混合的概念的国家。
A least-squares mixed finite element methods for the first-order system formulation of second-order elliptic problems and a formulation for the infinite boundary conditions are presented.
研究了无穷边界的二阶椭圆问题，探讨了将其转化为一阶系统的最小二乘有限元逼近方法。
The factor of the mixed partial derivative term controls the grid orthogonality. The other two factors of second order partial derivative terms control the grid spacing.
结果表明 ：方程中混合偏导数项系数具有控制网格正交性的作用；
Two-point boundary value problems of second order mixed type integro-differential-difference equation is studied by means of differential inequality theories.
基于时滞微分不等式的方法，提出此网络在平衡点的渐近指数稳定的充分条件。
As for the results themselves — which saw net profit rise 17.9% — analyst opinions were mixed, with Barclays noting that Tingyi's revenue for the second quarter was down 2%.
康师傅控股上半年净利润增长17.9%。对于该公司的业绩，分析师们看法不一。巴克莱(Barclays)指出，康师傅控股第二季度收入下滑2%。
We are coming up to earnings season for last quarter and some UK retailers have already reported mixed results for the second half of 2010.
我们正迎来去年第四季的财报季，而一些业已公布的英国零售商业绩显示，去年下半年表现良莠不齐。
We are coming up to earnings season for last quarter and some UK retailers have already reported mixed results for the second half of 2010.
我们正迎来去年第四季的财报季，而一些业已公布的英国零售商业绩显示，去年下半年表现良莠不齐。
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