中值

Well, he conceives God in the creation of the world like a mathematician who is solving a minimum problem, or rather, in our modern phraseology, a problem in the calculus of variations .

众所周知，通过发现切线方法，函数的最大与最小值理论取得了最大进展，这归功于莱布尼茨。他认为上帝在创世中就像一个解决最小值问题--或者用我们当代的术语说，变分法问题--的数学家。

I say "could be converted" because regardless of the pH, there will always be some bicarbonate and carbonate present, but at some pH there are enough protons in solution that if they were combined with the bicarbonate and carbonate present, it would all be converted to carbonic acid.

我认为："可转换"，因为不论其ph值，也往往会有一些碳酸氢盐和碳酸盐，但在一些ph值有足够的质子的溶液中，如果他们有机地结合起来，与碳酸氢盐和碳酸盐结合，它都将转为酸性。

To this end, the ultrasound cardiograph is filtered and fuzzily boundary enhanced, a threshold is set to obtain a binary image, then the heart's boundary is got through ellipse curve fitting, cubic spline interpretation and smoothing.

首先对超声心动图像进行滤波以消除图像中的噪声，并运用模糊数学理论进行模糊边缘增强，提取超声心动图像的内外膜边缘信息；接著对超声心动图像作二值化处理和椭圆曲线拟合，初步得到心脏的内外膜边缘；再采用相应的三次样条插值和平滑技术，得到光滑、连续的心脏内外膜边缘。

Zero knowledge protocol is a basic method of cryptography,which means that the certifier owns a secret,and it doesn′t reveal any other useful information about the secret to verifier when authenticated.

零知识证明是密码学中的一个基本方法，是指证明者使验证者确信证明者拥有某一个秘密值，而证明者没有向验证者泄漏关于该秘密值的任何有用信息。零知识证明的基本思想。

If you change the value of a static variable in a particular object, the value of that variable changes for all in stance s of that class.

在一个特殊对象中，如果你改变一个静态变量的值，那些变量的值就会为那个类所有的实例做改变。

By the use of the component sandstone electric conductivity model, the effect of the pore structure characteristic parameter to cementation exponent m and saturation exponent n in the Archie formula were studied. It can be found the cementation exponent m mainly reflects the pore space size and its sizes distribution. The m is bigger, the pore space is bigger, the throat is simpler, and the reservoir is better.

通过致密砂岩电导模型分析研究致密砂岩孔隙结构特征参数对Archie公式中的胶结指数m和饱和度指数n的影响，发现岩石胶结指数m主要是岩石孔隙空间大小及其大小分布的表征，m值越大的岩石其孔隙储集空间越大，孔喉越简单，储集性能越好；反之，m值越小，岩石储集性能越差。

The surface electromagnetic is expanded in a polynomial function via the Chebyshev approximation , then the electromagnetic distribution can be obtained at any frequency within the given frequency range , which is used to compute the scattered fields and the wideband radar cross section .

论文摘要：将切比雪夫逼近理论应用于目标宽带电磁散射特性分析中，通过求解给定频带的切比雪夫节点并用高阶有限元方法求得各节点处的目标表面场值，实现整个频带内任一频率点目标表面场值的快速预测，使得目标电磁散射特性得到快速分析。

The equation of chemical kinetics of source rock in North Qaidam is able to be built.

中、下侏罗统烃源岩热演化存在明显差异，前者平稳演化，现今Ro值一般在1.0～1.5％之间，生烃高峰期为N〓-N〓；后者在渐新世急剧增加，现今Ro值一般在2.0％以上，生烃高峰期为E〓-N〓初。

Then we find the relationship between the chromatic dispersion of the transmission fiber and the transmission performance in DWDM system. It shows that the optimum dispersion value exit around 6 to 11 ps/nmEkm.

然后我们找出了在这个DWDM传输系统中光纤的色散值与系统效能的关系，我们发现当色散值在6-11ps/nmEkm时会有较佳的系统品质。

Methods①The minimum inhibitory concentration and the minimum fungicidal concentration of citral against C.

方法①参照NCCLS M27A方案中的微量液基稀释法测定柠檬醛和氟康唑对原始白念珠菌的最低抑菌浓度和最低杀菌浓度；②采用多步诱导法，观察在含梯度浓度(1～50MIC)柠檬醛培养基上连续转种的白念珠菌MIC的变化情况，以氟康唑作为阳性对照，同时设空白对照和溶媒对照；③将敏感性下降的诱导株在无药培养基上连续转种10次后，检测其MIC值；④测定柠檬醛对氟康唑敏感性下降诱导株的MIC值。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。