查询词典 S curve

In order to testify our whether correction to Rossi's exchange term andthe potential of electron and nucleus is reasonable, we calculate 〓 moleculeelastic differential scattering cross section by electron impact on 100eV, ourresult is obviously better than Rossi's. Then we calculate elastic differentialscattering cross section at 150eV. In order to check the program thatcalculates molecule excitation cross section by electron impact, we calculatehydrogen excitation cross section from ground state to 〓 state at 20eVand 30eV, oxygen excitation cross section from ground state to 〓 state at15eV and 20eV. These calculations are in agreement with other theoreticresults, and experiment measure. Finally, we calculate sulfur moleculeexcitation〓 cross section by electron impact at5eV,7eV,9eV, 11eV, 13eV,15eV, and draw curve of excitation total crosssection corresponding to incident electron energy.

为了核对我们修改的计算激发态的程序是否正确，计算了电子与氢分子碰撞从基态激发到〓态入射能量分别为20eV和30eV时的微分截面以及电子与氧分子碰撞从基态激发到〓态入射能量分别为15eV和20eV时的微分截面，与别人的理论计算结果、实验的测量值基本一致，最后计算了电子与硫分子在5eV、7eV、9eV、11eV、13eV、15eV时的碰撞激发〓截面，作出了电子的入射能量与激发总截面的关系曲线，找出了总截面最大时对应的电子入射能量大约是11电子伏。

It's the first time that from the angle of computational mathematics combined with the structure model of parallel machine, the parallel degree of the relevant algorithms in orthopaedics clinic engineering modeling system, such as piecewise cubic Lagrange interpolation formula, piecewise cubic Hermite's interpolation formula, cubic spline, Chebyshev multinomial fitting algorithms, least square method and contour curve multinomial algorithms, were discussed.

论文首次从计算数学的角度并结合并行机的结构模式出发，讨论了在骨科临床工程造型系统中可能涉及的如分段三次拉格郎日插值公式、分段三次埃尔米特插值公式、三次样条函数、切比雪夫多项式拟合算法，最小二乘法以及轮廓曲线多项式求值算法的并行度。

The computing plots of the solutions from the two methods were inconsistent under the specified boundary-initial conditions, which stirred up the debate of the effectiveness of Maxwell's equations in lossy medium. It is found that the differences between the two numerical curves can be viewed as the Gibbs phenomenon caused by cutting off the high frequency components in computing the infinite integral of the numerical curve of Harmuth's solution.

通过比较两种解析解的数值曲线得出：两者的差异在于求解Harmuth解的数值曲线时，采取无穷积分的高频截断近似产生了吉布斯现象；在计算Harmuth解的数值曲线时不断增大积分上限，其数值曲线的振荡不断向不连续点处收缩，而且衰减加快，因此在求解Harmuth解的数值曲线时，若积分区间取为理想无限大，则可以预见相同计算精度下两种方法的电场解的数值曲线是一致的。

Results show that: productivity of Chinas service industry is overall increasing and shapes inverse U curve; technical progress is the primary increase factor of service industry's productivity and technical efficiency is the key constraint of service industry's productivity increase in China; regional development of service industry productivity in China is extremely unbalanced and east region has more increase advantage comparing with middle and west region.

研究结果表明，中国服务业的生产率总体上处于增长趋势，并呈现出先增后降的倒U型特征；技术进步是服务业生产率增长的主要因素，而技术效率则成为制约服务业生产率增长的关键原因；服务业生产率的区域发展极不平衡，东部地区具有明显的增长优势，而中西部地区的大多数省份发展滞后或缓慢。

Ballistic performance's simulative emulation and validation test of a certain projectile shows that the structure of projectile is fit for the needs of exterior ballistic stability, the data jumpiness of dispersion is within the range of normal, the resistance curve's rebounding phenomena is independent of the structure of projectile.

文中通过对某型弹丸外弹道特性的相似仿真计算和相似模拟验证试验结果表明，弹丸在结构满足外弹道飞行稳定要求的前提下，最大地面射程密集度数据跳动属正常散布，阻力曲线"反弹"现象与弹丸结构无关。

Ballistic performance s simulative emulation and validation test of a certain projectile shows that the structure of projectile is fit for the needs of exterior ballistic stability,the data jumpiness of dispersion is within the range of normal,the resistance curve s rebounding phenomena is independent of the str.

用外弹道相似性理论和模拟验证试验进行外弹道优化验证是分析研究中大口径炮弹外弹道特性的有效方法之一。

The results are the following: When calculating the motion mass, it is better to use idler's equivalent mass instead of the rotating part mass and serial idler's rotating inertias and equivalent mass are calculated. The accurate analysis result for the deflection curve length of the belt shows: The error calculated by the approximate parabola length is lower than 10〓. Thus the approximate method is accurate enough for calculation. The relations between the running resistances coefficient and the belt velocity are studied by experiment, which are the bases for calculating the linear coefficient values between them.

得出：在计算参与运动质量时对托辊应采用托辊的等效质量而不是目前采用的托辊旋转部分质量，并计算出了系列的托辊转动惯量和等效质量；对输送带的挠曲线长度进行了精确的分析，结果表明：采用近似的抛物线长度计算方法其误差在10〓以下，因而得到在计算输送带挠曲线长度时采用近似的抛物线具有足够的精度；对输送机运行阻力系数与带速间的关系进行的实验研究，得出阻力系数与带速线性关糸的系数值。

The theories of multi member function"s extremity value, Hooke Jeeves mode searching method solving wholly complex problem of extremity value and uniformity design method, one new and efficient method to choose test point, are applied to establish the two-dimension oil well orbit optimized model. The shortest length of oil well orbit curve is regarded as this model"s object and all kinds of effecting parameters are analyzed.

通过引入多元函数极值理论、求解复杂极值问题的HookeJeeves模式搜索法及一种较为新颖和高效的试验点选择方法：均匀设计法，建立以最短油井轨迹曲线长为目标的二维油井轨道优化设计模型，并对影响井轨迹曲线的参数进行了较为详细的分析。

Terms such as rational maximizer, marginal cost, and demand curve fall neatly into place within the real-life example of padding over to one's thermostat on a cold winter's morning to decide where to set it, gauging where the cost benefit tradeoffs might be-a process very similar to the one being performed at the other end of this transaction, by the marketplace players that provide our heating fuel.

诸如理性maximizer ，边际成本，需求曲线过于片面发生了现实生活中的例子，填充到一个人的调温器对寒冷的冬天的早晨，以决定在何处设置，以评估那里的成本效益权衡可能-一个过程非常相似，一个正在演出的另一端，这宗交易中，市场参与者提供取暖用燃料。

Productive expansion curve is the orbit of equilibrium point's variation in optimum factor combination caused by expanding firm's produce scale when not changing the price of produce factors.

文章在Cobb-Dauglas生产函数的基础上，推导出扩展线的参数方程，并得到成本支出与产量之间的一个函数关系，用以分析规模报酬的情况。1 Cobb-Dauglas生产函数Cobb-Dauglas生产函数是由数学家柯布和经济学家道格拉斯于上世纪30年代初一起提出来的。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。