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This is my last OpenGL for a project to use the "three-dimensional vector space / point" and related functions, they can use a definition of space vector / points, for the vector translation, zooming and rotation, the use of correlation function can also achieve two vector by the fork, get a Vectors absolute length of a vector unit, received a 3:00 decision vector perpendicular to the plane, a space to be the distance between two points, two vector to be the plot points, to be the angle between two vectors, such as operating for the use of user-friendly, each function is detailed Notes, it is particularly important if the calculation vector plot points, fork also took note, we hope to have useful.

这是我过去进行一个OpenGL项目时使用到的"三维空间向量/点"类及相关函数，使用它们可以定义一个空间向量/点，实现向量的平移，缩放和旋转等，使用相关函数还可以实现两向量的叉乘，得到一个向量的绝对长度，将一个向量单位化，得到一个三点决定的平面的垂直向量，得到空间中两点的距离，得到两向量的点积，得到两向量的夹角等操作，为方便用户的使用，每个函数都有详细的注释，特别重要的向量计算如点积，叉乘还有相关说明，希望对大家有所用处。

In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0～15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.

本文对以克拉玛依为例，对干旱区绿洲土壤质量的时间空间变化进行研究，在有关土壤质量的研究理论指导下，通过田间调查取样和室内分析相结合的方法，对新疆克拉玛依市农业开发区的不同土地利用方式及同一土地利用方式下不同利用年限土样土壤理化性质进行测定，从而对新垦绿洲不同土地利用类型土壤质量进行综合评价，结果如下：四种土地利用方式中，农地、乔木林地表层(0-15cm)土壤容重较大；各土层人工柽柳芦苇地的土壤有机质含量均较大；柽柳芦苇地的有机质在矿化过程中所释放出有效氮，导致柽柳芦苇地的C/N比例较高；受到农业耕作使用大量氮肥的影响，农地各土层全氮含量变异较明显；乔木、灌木及芦苇的枯枝落叶主要集中在5cm范围之内，导致几种土地利用方式类型下该层土壤速效氮最大；天然灌木林地的土壤总盐在各层均较大，其次是农地，说明天然灌木林地的高耐盐能力，以及该区农业生产用地的土壤盐碱化程度较重。

Additional, in industrial respect, ion exchange fiber can become activator carrier as activator, use at catalysis certain and organic reaction; Can use as dehydrating agent and grease depart material; Use as water sorbent, take off with what divide at the water in storehouse except; Use as material of sex hygiene suction blood, can make radioactivity is absorbed and defend material; Use ion exchange fiber the adsorption to the bacterium and antiseptic ability, make underwear of deodorant insole, health care wait.

另外，在工业方面，离子交换纤维可作为催化剂成催化剂载体，用于催化某些有机反应；可用作脱水剂和油水分离材料；用作水吸附(物质表面吸住周围介质中的分子或离子现象)剂，用于仓库中水分的脱除；用作吸血性卫生材料，可制成放射性吸收和防护材料；利用离子交换纤维对细菌的吸附(物质表面吸住周围介质中的分子或离子现象)和杀菌能力，制成防臭鞋垫、保健内衣等。

Open since January 1, 2003 began, the Beijing city public housing the right to use the transaction to start the pilot, the main forms include: public housing tenant to complement the difference between the way the exchange of public housing the right to use ; Gongfang lessee the right to use the compensatory transfer of public housing; public housing to public housing tenant the right to use the exchange of housing rights; Gongfang lessee of its public housing tenant to sublease part or all use by others.

开放以来03年1月1日开始，北京的城市公共住房使用权交易开始试点，主要形式包括：公屋租户以补充之间的差异的交流方式公共房屋的使用权；公房承租人的使用权有偿转让的公共住房；公屋公屋租户的使用权交换住房权利；公房承租人的公屋租户转租部分或全部使用由他人。

Land use type is the outcome of duple influence of nature and human activity, which possessing scrambling, relative instability and complexity, and it can be discussed by fractal theory. Application of fractal theory in land use structure involve in the calculation of fractal dimension of land use type, research method and fractal description of change of land use structure, fractal model of region landscape and so on, but fractal mechanism of spatial diversity of land use type is rarely reported.

土地利用类型是一种在自然和人类活动双重作用下的产物，具有不规则、相对不稳定性和复杂性特征，可以利用分形方法进行探讨；分形理论在土地结构研究中的应用涉及土地利用类型分数维的计算、土地利用结构分形研究方法、土地利用结构及其动态变化的分形描述、区域景观结构的分形模型等方面；但土地利用类型的分形机制的空间差异研究少见报道。

The results showed that the use of tourmaline could increase alcoholic fermentation speed of molasses, the fermentation speed kept increasing with the increase of the use level of tourmaline, however, as its use level was above 11 %, the increase of fermentation speed was inevident; the use of tourmaline had no side-effects on the content of the main impurities including methanol, n-propyl alcohol, isobutyl alcohol, isoamyl alcohol; though it had weight loss after a period of use, it could still promote alcoholic fermentation of molasses.

结果表明，电气石对提高酵母酒精的发酵速率有促进作用，随着使用量的增加，发酵速率也随着提高，当使用量超过11 %时，发酵速率的继续提高不明显；电气石对发酵过程主要杂质甲醇、正丙醇、异丁醇、异戊醇等没有影响；电气石在使用一段时间后，重量减轻，但仍有促进发酵的作用。

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First , divide the vocabulary into 5 categories (synonymy ; antonym; homophony; homomorphism; conjugate) Second, different strategies to different categories but to make the CAI visual, interesting, and systematic. The thorough strategies carried out in the experiment are as follows: Use picture-showing to differ some synonymies ; Use movie clip to learn some antonym; Use flash cartoon to create the mini-situation of homomorphism ;Use audio equipment to learn homophony; Use specific characters and design crossword to help students memorize the conjugates.

多媒体词汇教学在实践中的具体应用策略如下：近义词学习主要采用图片直观法，文本讲练法，图示辨析法，英英连线法进行实验；反义词学习主要采取下面三种形式，结合影片片段学习反义词，学生参与反义词教学，和游戏竞赛学习；形近词学习主要采取利用动画情境联想教学，利用歌曲的Flash动画学习形近词的策略；近音词、同音词学习方式主要采取利用音频手段比较学习，利用操练的形式学习近音词；同根词学习采取多变字效学习及crossword 学习的策略。

Experts believe the project with the traditional lead-smelting technology, has the following characteristics: First, the smelting process to adopt internationally advanced level of oxygen blowing at the end of smelting - to restore the blast furnace method, the use of lead refining electrolysis ; Second, the use of sulfur dioxide gas double-absorption acid technology, the production of domestic water use of recycled water sewage treatment process; Third, the use of waste heat for power generation, waste to make full use of energy reduces energy consumption; Fourth, the high level of automation, low power consumption , Investment, raw materials adaptable, comprehensive recovery rate of high-quality products.

专家认为，该项目与传统炼铅工艺技术相比，具有以下特点：一是冶炼工艺采用具有国际先进水平的氧气底吹熔炼-鼓风炉还原法，铅精炼采用电解法；二是二氧化硫烟气采用两转两吸制酸工艺，生产生活用水采用循环水污水处理工艺；三是利用余热发电，充分利用废弃能源降低了能耗；四是自动化水平高、能耗低、投资省、对原材料适应性强、综合回收率高、产品质量好。

Underuse, overuse, wrong use and monotonous use of linking words. The four kinds of problems can be analyzed in greater detail. For example, underuse of linking words includes lack of linking words between clauses, between sentences, and between paragraphs; overuse of linking words consists of overuse of and, overuse of compound sentences, overuse of linking words in paragraph, and others; wrong use of linking words concern wrong use of linking words similar in form while different in meaning, wrong writing of linking words; wrong use of linking words because of wrongly understanding the logic relation between the linked parts, and others.

少用连接词语又分为分句与分句之间缺乏连接词语、句子与句子之间缺乏连接词语和段落与段落之间缺乏连接词语；滥用连接词语又分为滥用and、滥用复合句、语段中滥用连接词语和其它滥用连接词语的情况；错误使用连接词语又分为想当然使用意思或形式相近的连接词语、理解正确但记忆模糊造成连接词语书写错误、错误理解被连接成分之间的逻辑关系而错误使用连接词语以及其它错误使用连接词语的情况；连接词语单调的结论是通过对统计数据进行分析得出来的。

Means the parent directory, so this command means to execute "toolchain.sh," which is in the current directory.

代表父目录，所以这个命令就是执行当前目录下的"toolchain.sh"。

Yes,In fact,I'm on our city ream.

是的。事实上我是我们市队的。