后柱

A VOF method was developed to simulate the burst of a axisymmetric buoyancy bubble near a free surface, the formation, rise and descent of a liquid column after the burst, and the whole course of the oscillation of the free surface occurring afterwards until the free surface tends to calm.

发展了一种VOF方法，用以模拟自由面近旁单个轴对称浮力气泡的破裂、破裂后液柱的形成、上升和下降、以及随后发生的液面振荡直至自由面趋于静止的全过程。

Key components installed ink, adjust the blade support shaft section of copper Cap nut, the blade front-end on either side of half-round slot is placed in the kuyto specialadhesive Groove at the antileakage gum, tighten the screws, the installation is complete with rubber extrusion antileakage blade, the two-blade antileakage glue between the slot from semicrcular extpuded, producing gum in the column so that you can more effectively prevent ink seepage.

在安设不朱键组件时，调动不朱刀支架轴段的铜螺帽，不兵不朱刀前端两侧的半圆槽安插在托不活胶槽处的防漏胶上，拧不松变动螺丝，安设达成后用不朱刀挤压防漏胶，不兵两不朱刀之间的防漏胶从半圆槽洋挤出，爆发胶柱，这样不离可以更灵验不天避免油不朱渗漏。

This article mainly explains the safety principium of infectant factors in waste water vented by the paper making industry in China. Through the study on the experiment in open country and indoors with soil pole, indicating that it is a complicated process of biochemical degradation to form a layer, which has a biochemical capability to process COD degradation in polluted water from paper making industry.

综述我国造纸业污水中的污染因子危及地下水水质安全的机理，通过对野外试验和室内土柱试验的过程及结果进行分析研究，表明在包气带中形成一个以生物化学作用为主的生化层在造纸污水中COD降解是一个复杂的生物化学降解过程；生化层在天然状态下形成，由生物氧化带和生物氧化还原带形成，其形成过程具有明显的阶段性；只有当生物氧化还原带形成后，生化层才发育成熟，具备对COD降解的生化能力；生化层空间分布，仅局限在污水池、渠底部包气带中有垂向渗流的部分。

Content of the course consists of:(1)Basic Theories of Polynomials ;(2)Linear Algebra: topics on basic matrix theory, determinant, system of linear equations, vector space, linear transformation, eigenvalue problems, inner product and Euclidean space , and quadratic form etc.;(3) Analytic Geometry: topics on algebraic operations of vectors, coordinates, lines and planes, curves and curved surfaces, etc.

学习本课程后，学生应学会用线性空间与线性变换的观点处理包括线性代数方程组在内的有关理论与实际问题；学会熟练地运用矩阵工具；本课程还学习基本的多项式知识和空间解析几何的基本知识。课程内容包括几个主要部分：（1）多项式代数；（2）线性代数：矩阵，行列式，线性代数方程组，向量空间与线性变换理论，特征值问题，欧氏空间理论，二次型等；（3）解析几何：几何空间向量代数，通过建立坐标系以及借助向量方法研究空间平面与直线及点﹑线﹑面的相互关系，借助曲面方程研究空间曲面，尤其是柱面，锥面，旋转面和二次曲面以及曲面的交线等。

So we need consider the effects of the earth curvature. In global integration, the requirement of the data coverage and the computation are comparative high. In this thesis, a moving coordinate system is used to overcome the effects of the earth curvature. And a differential calculation concept is proposed that assumes the difference of geoid calculated between the central point and its marginal point is constant when the integration area is far away from the central point.

论文中提出了利用柱体积分时采用移动坐标系来顾及地球弯曲的影响，并利用差分的概念，设想离计算区域到一定距离后，流动点对计算区域内的中心点和边缘点的影响之差为一常数，并用试验的方法，统计分析了它们对大地水准面的有效积分拓展范围。

Results show that 4-oxo-β-ionone is the major product with yield of 53.5% under the conditions as follows: reaction temperature 45℃, reaction time 24 h, the molar ratio of n: n(NaClO3): n 20: 100: 3, and pH value of solution in 1-3; on the other hand, 5,6-epoxy-β-ionone is major product with yield of 25.4% when reaction temperature is 40℃, reaction time is 24 h, the molar ratio of n: n(NaClO3): n is 20: 120: 5, and pH values of solution is 3. The excessive β-ionone can be recovered by vacuum distillation for reusing again. 4-oxo-β-ionone and 5,6-epoxy-3-ionone were purified by recrystallization and silica gel column chromatograph respectively with the purity over 98%.

研究结果表明：氯酸钠氧化β-紫罗兰酮的反应主要生成4-氧代－β-紫罗兰酮和5，6-环氧－β-紫罗兰酮，经重结晶和硅胶柱层析分离，纯度高于98%；4-氧代－β-紫罗兰酮的有利合成条件是反应温度为45℃，反应时间为24h，溶液的pH值为1~3，反应物配比n：n(NaClO3)：n为20：100：3，最佳收率为53.5%；5，6-环氧－β-紫罗兰酮有利的合成条件是反应温度为40℃，反应时间为24h，溶液的pH值为3，反应物配比n：n(NaClO3)：n为20：120：5，其收率为25.4%；未反应的β-紫罗兰酮经减压蒸馏回收后可重复使用。

Emergence of the phenomenon of the keyboard keys of the card by the following two reasons: a reason for this is that the plug cap below the location of offset column, making keycap button after pressing the body shell is not stuck up and created a card key, This causes the occurrence of the new keyboard or use the keyboard soon.

出现键盘的卡键现象主要由以下两个原因造成的：一种原因就是键帽下面的插柱位置偏移，使得键帽按下后与键体外壳卡住不能弹起而造成了卡键，此原因多发生在新键盘或使用不久的键盘上。

Methods Star anise were extracted from Illicium verum Hook.f. using ethanol and ethyl acetate as solvents. After macron absorption resin layer separation, a kind of white fine powder shikimic acid were obtained. The extracted shikimic acid were determined for chemical qualitative analysis.

采用乙醇提取、乙酸乙酯等有机溶剂萃取八角茴香，经大孔吸附树脂柱分离，得到白色精细粉末的莽草酸，并对莽草酸进行化学定性分析，镇痛实验采用扭体法和温浴法，观察腹腔注射莽草酸溶液后小鼠痛阈潜伏期和扭体反应的次数，设阿司匹林和生理盐水为对照组。

Methods Star anise were extracted from Illicium verum Hook.f. using ethanol and ethyl acetate as solvents. After macron absorption resin layer separation, a kind of white fine powder shikimic acid were obtained. The extracted shikimic acid were determined for chemical qualitative analysis. Writhing test and warm bathing test were performed and observed the mice pain threshold latency and writhing reaction times after giving peritoneal shikimic acid extraction solutions.

采用乙醇提取、乙酸乙酯等有机溶剂萃取八角茴香，经大孔吸附树脂柱分离，得到白色精细粉末的莽草酸，并对莽草酸进行化学定性分析，镇痛实验采用扭体法和温浴法，观察腹腔注射莽草酸溶液后小鼠痛阈潜伏期和扭体反应的次数，设阿司匹林和生理盐水为对照组。

After macron absorption resin layer separation, a kind of white fine powder shikimic acid were obtained. The extracted shikimic acid were determined for chemical qualitative analysis. Writhing test and warm bathing test were performed and observed the mice pain threshold latency and writhing reaction times after giving peritoneal shikimic acid extraction solutions. Aspirin and normal saline were used as controls.

采用乙醇提取、乙酸乙酯等有机溶剂萃取八角茴香，经大孔吸附树脂柱分离，得到白色精细粉末的莽草酸，并对莽草酸进行化学定性分析，镇痛实验采用扭体法和温浴法，观察腹腔注射莽草酸溶液后小鼠痛阈潜伏期和扭体反应的次数，设阿司匹林和生理盐水为对照组。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。