下标

Through a discussion on the suffix features of miniterm and maxiterm ,this paper offers a suffix calculating approach to miniterm and maxiterm in principal disjunctive normal form,principal conjunctive normal form determined by disjunctive normal form,and conjunctive normal form of propositional formula.

通过极小项和极大项的下标特征的讨论，给出了由命题公式的析取范式、合取范式而确定的主析取范式、主合取范式中的极小项、极大项的下标计算方法，从而简化了由繁杂的命题公式推演或真值计算求主范式的计算过程。

In chapter three, we divide the rows of matrix into types finer than those in chapter one. Again by looking for positive diagonal matrix factors, we obtain several new criteria for identifying generalized strictly diagonally dominant matrix, improving some existing criteria.

第三章在下标集N 递进式划分的条件下，根据递进后，某些下标集上部分矩阵元素的性质，寻求正对角矩阵因子，获得了广义严格对角占优矩阵的几个新判别法，同时改进了一些已有结果。

The calculation of initial alignment direction cosine matrix between SINS body frame and navigation reference frame is expanded into three parts:(1) the DCM between i0 frame and n frame is easily obtained via local geographical coordinates and initial alignment time;(2) by expressing SINS specific force equation in b frame and by the aid of external velocity log, the constant DCM from i(subscript 0) frame to i0 frame is achieved;(3) attitude updating using gyro samples gets the DCM between b frame and i(subscript b0) frame.

将捷联惯组坐标系与导航坐标系之间的初始对准姿态矩阵的实现分解为三步骤：(1)通过地理位置和初始对准时间求解i0系至n系的变换矩阵；(2)通过惯导比力方程变形，引入刚速仪速度辅助，求解从i(下标 b0)系至i0系的常值变换矩阵；(3)使用姿态更新算法实时计算b相对于i(下标 b0)系的变换矩阵。

In the case of bulk materials, the optimal phase only correlates with experimental conductions. But for nanomaterials, the equivalent resistance and capacitance R(subscript ins and C of MIS structure vary under illumination that will result in great changes in the optimal phase.

对於体相材料，"最佳相位"仅与测量条件有关；对於纳米材料等体系，光照可以改变MIS结构的等效电阻R(下标 ins、等效电容C(下标 ins，从而将引起最佳相位角的显著变化，使"最佳相位"与所研究材料的特性直接关联起来。

The results showed that refined fish oil is yellow, transparent with light fishlike smell and under the SC/T3502-2000. There was 36.5% of total polyunsaturated fatty acid in the refined fish oil, in which the contents of eicosapentenoic acid and docosahexenoic acid was 13.1% and 20.3%, respectively.

结果表明：精炼后的鱿鱼油澄清透明，略显淡黄色，并有淡淡的鱼腥味，其各项指标均符合SC/T3502-2000鱼油一级标准；应用气相色谱／质谱法分析了鱿鱼油的脂肪酸组成，精炼鱿鱼油中多不饱和脂肪酸的含量较高(36.5%)，其中C(下标 20：5)和C(下标 20：6)的含量分别为13.1%和20.3%。

From the fact that the hydrogens of microbial methane originate in water, it may be deduced that with the reduction of HCO(superscript – subscript 3) a transfer of H atom occurs from the O atom to the C atom within HCO3 anions formed by the disassociation of dissolved CO2 in water, and furthermore, the formyl group forms.

由前人研究结果推断HCO(上标–下标 3)在脱去两个O原子的同时，可能发生了亲核重排，羟基H原子迁移到C原子上，形成了甲酰基HCO(上标-，使甲烷的第一个H原子来源于水。

They were reversible un-competitive inhibitors, and their inhibition constants of free enzymeK(subscript I were 254.00 and 136.78 mmolL^(-1), respectively. Urea was reversible mixed-type inhibitor, and its inhibition constants of free enzymeK(subscript I and enzyme-substrate complexK(subscript IS were determined to be 379.02 and 1182.00 mmolL^(-1), respectively.

Na2SO3和H2O2对酶的抑制均表现为可逆反竞争性类型，它们对游离酶的抑制常数K(下标 I分别为254.00和136.78 mmolL^(-1)；尿素对酶的抑制表现为可逆的混合型抑制，它对游离酶的K和对酶－底物复合物的抑制常数K(下标 IS分别为379.02和1182.00 mmolL^(-1)。

From the chromatographic retention data it was possible to calculate the separation factors for the two solutes and to obtain values for thermodynamic parameters such as the Gibbs free energy ΔG(subscript s and the enthalpy ΔH(subscript s of adsorption of water and ethanol on the fuel ethanol special adsorbent.

由气相色谱的保留时间计算出水和乙醇的分离因子和吸附剂吸附水、乙醇的吉布斯自由能变化ΔG(下标 s、吸附焓变ΔH(下标 s等热力学参数。

Photosynthetic rate P(subscript n, transpiration rate, stomata conductance G(subscript s, active photosynthetic radiation, relative air humidity, air temperature and water use efficiency of three tree species Platycladus orientalis, Pinus tabulae formis, Tamarix chinensis were measured with a portable LI-6200 gas analysis system under natural conditions in the mountains adjacent to Lanzhou City.

利用LI-6200便携式光合测定仪对兰州市南北两山侧柏、油松、柽柳等3种绿化树种在自然条件下的光合速率P(下标 n、蒸腾速率、气孔导度G(下标 s、光合有效辐射、空气相对湿度、大气温度和水分利用效率进行了测定。

In order to study the changing process of Barium strontium titanate Ba(subscript xSr(subscript 1-x) TiO3, BST from cubic phase to the tetragonal phase with Ba doping and the ferroelectric characteristic of BST, the total energy of BST with different mole ratio of Ba/Sr when Ba doped was calculated and the fine structure determined, based on general gradient approximation, by means of ultrasoft pseudopotentials plane wave method.

为了研究钛酸锶(SrTiO3， ST)中随Ba的掺入，其晶体从顺电相到铁电相的变化过程及四方相钛酸锶钡Ba(下标 xSr(下标 1-x)TiO3， BST的铁电性。在广义梯度近似下，利用超软赝势平面波方法计算了不同Ba/Sr摩尔比BST的总能量，确定了BST的精细结构。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。