最小地

When asked why he chooses to teach children which requires a lot of physical energy, he often will comment on how children need the best teachers and make a joke about teaching "at his level".

所以经常有人问他"教小孩儿最辛苦了，为什么这么多年你还执着地教？"David总是幽默地回答"最小的孩子才需要最好的老师，我就是最好的老师，而且跟可爱的孩子们在一起能让我的心永远年轻"。

Ionized helium at least, the density minimum, it can quickly disperse from the metal bath of metal vapor produced by an increase, so to use helium as shielding gas, the plasma will be to maximize the suppression, thus increasing the penetration depth, improve welding speed.

氦气电离最少，密度最小，它能很快地驱散从金属熔池产生的上升的金属蒸气，所以用氦作保护气体，等离子体将被最大程度地抑制，从而增加熔深，提高焊接速度。

The Winklhofer method is an exact method.But Winklhofer method cannot calculate centerdistance of a roller chain drive whose length of chain is an odd number of chain pitches.Involute function method is anapproximative method.

W ink lhofer方法是准确的计算方法，但只能用于链条总长是链节的偶数倍时的链传动，而渐开线法是近似法，不能精确地计算链传动中心距；而二分法是一种数值法，它可精确地计算链传动中心距，并且适用于链条总长是任意值的链传动，可计算出链传动中心距最大值和最小值。

Results Based on solving system of linear equations,A.M.

结果勒让德在先驱者解线性方程组的基础上，以整体的思想方法创立了最小二乘法；高斯由寻找随机误差函数为突破，以独特的概率思想导出了正态分布，详尽地阐述了最小二乘法的理论依据。

Applied example makes clear, PSO can be solved well have nonlinear the computational precision of the least square method of optimizes problem;PSO computational precision excel that optimize target function or has multi-parameter, define with other and contented standard most the methodological computation precision of zonule condition comparatives, can achieve the result with taller precision and come true simply easily.

应用实例表明，PSO能够很好地解决具有非线性优化目标函数或具有多参数的优化新问题；PSO的计算精度优于最小二乘法的计算精度，和其他满足标准定义的最小区域条件的方法计算精度相当，能够获得精度较高的结果且简单易于实现。

Weed species which appeared Over 20% in plots of golf courses were Cyperus rotundus,Kyllinga brevifolia,Oxalis dellenii,Panicum repens,Eleusina indica,Paspalum conjugtum,Digitaria sanguinalis,Hydrocotyle s...

在 2 0 %以上的样带小样方中出现的杂草种类为13种，即香附子、水蜈蚣、黄花酢浆草、铺地黎、牛筋草、两耳草、马唐草、天胡荽、狗尾草、空心莲子草、马齿苋、鸡眼草和犁头草；13种主要杂草总的年消长动态是：1～ 3月份个体数量较少，4～ 10月份期间生长加快，但消长起伏不平，10月份后变缓；70 %以上的主要杂草在草坪-杂草群落中生态位宽度均在 0 。7左右，其中生态位宽度较高的杂草种类为香附子(0 。90 5 4 )、水蜈蚣(0 。86 18)和黄花酢浆草(0 。8381)，生态位最小的杂草种类为马齿苋(0 。392 2 )；13种杂草中，相似性指数最高的杂草种对为空心莲子草与马齿苋(0 。75 98)，最小的杂草种对为天胡荽与鸡眼草 0 。16 6 6

Some history: After her daughter was killed by an intoxicated driver, Candy Lightner founded Mothers Against Drunk Driving and successfully lobbied for the 1984 National Minimum Drinking Age Act (the law that's up for reauthorization in 2009), which gave full federal highway funds only to states that set the minimum age to purchase or consume alcohol at 21 years.

看看历史：肯迪·莱特娜的女儿被一个喝醉的司机撞死之后，她成立了&母亲们的反酒后驾车&组织，并成功地说服议员们通过了1984国家最小饮酒年龄法案（这部法案将在2009年重新修订），法案称将把全部的联邦道路基金只给予那些规定最小的买酒或饮酒年龄为21岁的州。

In order to select optimal grid and good computation efficiency to recover the entire signal, aiming at the Ricker wavelet commonly used in forward modeling, we analyzed the alias and signal restoration problem in finite-difference method based on spatial sampling theorem and seismic wave traveling regulation in media with different velocity, to derive quantitative relationship among the modeling grid size, minimum velocity of model layer, and recovered main frequency of wavelet.

为了选择最佳的网格尺寸以及以最小的计算量完整地恢复出信号，针对地震波场正演模拟中经常使用的Ricker子波，根据空间采样定理和地震波在不同速度介质中的传播规律，分析了有限差分算法中的假频和信号恢复问题，推导出模拟网格尺寸、模型地层的最小速度和能够恢复的子波主频之间的近似定量关系，并用数值算例验证了这一关系。

The result shows that the convergence of active contour curve is not only depended on the image gradient,but also the target region.

简单地讲，主动轮廓模型是一条由相应能量函数控制的可形变参数曲线，以能量函数最小化为目标，控制曲线变形，具有最小能量的闭合曲线就是目标轮廓。

This method differentiates the flat region from edge region by the difference between the maximum mid-value and the minimum mid-value,which enhanced the ability of denoising in wavelet transform domain and effectively protect the details.

该方法利用最大和最小中值之差判断平坦区域和边缘区域，提高了小波域中去除噪声的能力，同时有效地保护了信号细节。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。