分两次

Finally, two short-path distillation processes and one falling film evaporator are applied in the regeneration of waste lubricating oil. In the test, the diesel oil, gasoline and lubricating oil are distilled respectively, while the gelatinoid materials, asphaltene and carbon residue remain in the draft. The regenerative lubricating oil accords with the standards of base oil. And the recovery efficiency is up to 75 percent. The technology used in the test doesnt comprise processes like pickling and alkali neutralization, which would cause secondary pollution like acid draff and sulfur dioxide and so on. As a result of this, our technology is friendly to the environment.

最后，利用一级薄膜蒸发和两级短程蒸馏工艺对废润滑油进行了再生回收工业应用试验，将柴油、汽油等轻油以及润滑油馏分分别蒸馏出来，而大部分胶质、沥青质、碳垢存在于残渣中，试验得到的再生润滑油符合基础油的标准，回收率达到75％，达到废润滑油再生的目的；同时再生过程中没有酸洗、碱中和等工序，不产生酸渣、二氧化硫等二次污染，是一种清洁环保的废润滑油再生工艺。

At first, it analyses the visibility processing of complex scene, including: spatial partition technology BSP, quadtree, octree and equational octree which can optimize scene, category of quick visibility estimation algorithm in the 3D scene, portal which can accelerate rendering, level of detail and mesh simplification based on quadric error metrics used to simply models in 3D scene.

首先分析了复杂场景的可视化处理，包括优化场景渲染的空间剖分技术：BSP树、四叉树、八叉树、均分八叉树；其次是三维场景快速可见性判断算法的分类，可加速渲染的入口技术；最后是用于三维场景中模型简化的两个算法：层次细节模型简化技术和基于视点的二次误差度量网格简化。

McCann Erikson and Mindshare are the incumbent creative and media agencies, respectively, and the tenders are in line with government procedure outlining that tenders must be held every two to three years.

麦肯和Mindshare分别是现任的创意机构和媒体机构。此次的各类竞标按照政府规定的程序，每两至三年举行一次。

The topics covered in these sections are the geometric interpretation of systems of linear equations, the classification of finite symmetry groups in two and three dimensions, the exponential of a matrix and its application to solving systems of first order linear differential equations with constant coefficients, and Hurwitz's theorem on the composition of quadratic forms.

这些条文所涉及的主题是线性方程组的几何解释，在两个和三个有限对称群的分类方面，一个矩阵及其应用，以解决一阶常系数线性差分方程，系统指数赫尔维茨定理在二次形式组成。

Low temperature inspissation reflux's withdrawing a machine set is to synthesize a reflux, the 渗漉 withdraws, the against the current withdraws and takes out with hot reflux and lifts and condenses 4 kinds and withdraws principle, withdraw, condensing Chinese herbal medicine two work prefaces carry on in the meantime, a completion Chinese herbal medicine withdraws, concentrated new craft, and change and withdraw the work in the bottle and often press of heat decoction craft, make use of vacuum negative press and carry on low temperature and withdraw low temperature concentrated, make and withdraw work temperature in the bottle a control in 60 ℃~70 ℃, concentrated temperature control in 50 ℃~60 ℃, promised the medicine material valid composition to be steamed not and run off.

请各位英语高手帮忙，拜托，急用，有重谢！！请各位英语高手帮忙翻译以下内容，不要机械翻译，感觉不错定当加分重谢！！拜托，急用！！低温浓缩回流提取机组是综合了回流，渗漉提取，逆流提取与热回流抽提浓缩四种提取原理，将中药的提取、浓缩两道工序同时进行，一次完成中药提取、浓缩新工艺，并改变提取罐内的工作与常压的高温煎煮工艺，利用真空负压进行低温提取低温浓缩，使提取罐内的工作温度控制在60℃~70℃，浓缩温度控制在50℃~60℃，保证了药材有效成分不被蒸了流失。

Namely, the first, the beginning, end and length of growing season of every type of vegetation is estimated with threshold method and moving average method, and the beginning end and length of growing season of vegetation from 1982 to 1999 is fitted linearly, finally, linear trend of the beginning end and length of growing season of vegetation is analyzed. The second, phenological phase in different years and zones is estimated based on greatest changes of slope method and EOF analysis method, and the result monitored by the two methods is compared, as a result, trend of growing season change from 1982 to 1999 in different latitude zones is better acquired. The third, phenological phase of vegetation in different spatial location from 1982 to 1999 is fitted based on curve. Then, spatial difference rules of growing season of every year and average of multi-year is discussed in article. In the end, lag correlation and linear regress are used to study relation between phenological phase of different types of vegetation, different latitude zones, different spatial places and climate changes.

利用阈值法和滑动平均法逐年估测了每种植被类型的生长季的开始、结束日期及长度；对18年中植被生长季的开始、结束时间和长度进行一次线性拟合，分析了植被生长季的开始、结束日期和长度的线性变化趋势；基于最大变化斜率法和EOF分析法估计了不同年份、不同区域内植被生长季的开始、结束时间及其长度，并对这两种方法的监测结果作了比较，从而得到了较好的不同纬度区域1982～1999年植被生长季的变化趋势；基于曲线拟合了1982～1999年的不同空间位置的植被物候期，然后讨论了每年和多年平均的植被生长季的空间分异规律；最后利用时滞相关分析和线性回归研究了不同类型植被的物候期与气候变化的相互关系，不同纬度带的植被物候期与气候变化的相互关系，植被物候期与气候变化空间相互关系。

This is a language where 'cleave' can mean to cut in half or to hold two halves together; where the simple word 'set' has 126 different meanings as a verb, 58 as a noun, and 10 as a participial adjective; where if you can run fast you are moving swiftly, but if you are stuck fast you are not moving at all; where 'colonel,' 'freight,' 'once,' and 'ache' are strikingly at odds with their spellings.

在英语里，"劈"既可以是指一切为二的意思，又有把两样东西粘合在一起的意思；一个简简单单的"SET"，作动词时，就有126种不同的意思，而作名词用时，又有58个意思，作为分词形容词是，则又有10种意思了；英语里，如果说你跑地快，说明你移动的迅速，但是快这个次在与粘用在一起时，这时的快就不是原来那个意思了；名词colonel、 freight和once则与它们的拼写形成鲜明的对比。

Two chloride profiles of unsaturated zone at piedmont plain of Taihang Mountains suggestedthat there are three climatic cycles showing the cold-dry or wet-warm conditions over the psat 300years.

太行山前的两个包气带剖面氯含量变化记录说明：过去300年来该区古气候存在三次干湿变化旋回，湿期分别是公元1702-1725年，1761-1825年，1876-1892年。

We estab-lish,under some mild assumptions,a locally quadratic convergence theoremfor Method I and prove a semi-local convergence theorem for Method II.Applications of the two methods to complementarity,variational inequalityand optimization problems are investigated as well.

在某些适当的假设下，我们证明了方法I的局部二次收敛性和方法II的半局部收敛性；还研究了两个方法在求解互补问题，变分不等式问题及约束优化问题中的应用。

The contents of this paper are as follows:Firstly, we study the following semilinear elliptic equation with Dirichlet boundaryvalue problem:in the subcritical growth case we obtain at least two nontrival solutions by using the three-critical-point theorem and the reduction method.

我们首先研究下面半线性椭圆方程Dirichlet边值问题：在次临界增长情况下，利用变分方法中的归约方法和三临界点定理，得到了方程至少有两个非平凡解。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。