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And tell you the principle concerning bike,we can learn how and when it was invented and its basic structure as well from the passage.we got the history of bike and when it become popular,these are really interesting.although we usually ride bike around,we're not familiar with the history and the basic structure of it.after learning the unit,it give me a fresh knowledge of bike,and also tell us commonsensibles like how to forbit downdipping while riding in muddinesses and so on.it's a great help for us.because why don't learn more to keep our bikes more safe?

而且从文章告诉我们自行车是怎么样发明的？什么时候发明的？它的构造又是怎么样的？让我们了解了自行车的历史。以及它是什么时候开始流行的。这些都相当有意思。虽然平时我们经常骑脚踏车，可对他的历史来源和它的简单构造也不是很清楚，但学了这单元之后，使我对脚踏车又有了一个新的认识。而且它还告诉我们，当我们骑在泥泞的地面时，怎么样避免下沉？等等一些常识性的问题，可以让我们在现实生活中运用到，这是起着很大作用的，因为多点了解就能让自己的行车得到更好的安全保证。何乐而不为呢？

As the basic work for the tax revenue forecasting, in the first part ,the paper discuss the relationship between tax and economics from the mic-economics and mac-economics views, and suggests three basic mode for the analysis of tax and economics: first is the report forms of tax revenue, second is the formulable relationship analysis, third is the comparison for tax economics.

文中选取在我国影响比较大的中国社会科学院&中国经济形势分析与预测&课题组对中国经济及税收所做的预测进行回顾和分析。

A weak correlation existed between wood basic density and latitude/longitude, while a strong negative correlation existed between wood basic density and annual mean temperature, temperature in January, frostless season and accumulated temperature over 10℃ of the seed source.

种源木材基本密度虽与产地经纬度相关性较小，但却与产地年均温、1月均温、无霜期和≥10℃积温呈显著的负相关。

After introducing basic theory of low speed and high torque drive system, theory analysis method and engineering practical technique of electronic-electric-mechanic integrated gearless drive system has been discussed from three basic subjects of the micro-electronics and power electronics, electric machines and mechanical engineering separately.

在介绍了低速大转矩传动系统的理论基础之后，分别从微电子和电力电子、电机工程、机械工程等三个基本学科阐述了电子-电气-机械一体化无齿轮传动系统的理论分析方法和工程实用技术。

The analysis of the basic knowledge of geothermic field of natural gas hydrate reservoir regions in seafloor indicates that it is feasible to establish the basic geothermic field model of natural gas hydrate reservoir regions in seafloor following the theory and method of basin geothermic model.

在分析海底天然气水合物赋藏区域地热场特征的基础上，借鉴盆地地热模型理论和方法，建立了海底天然气水合物赋藏区域的地热基本模型，并详细介绍了边界条件和导热系数的确定方法。

BMSCs were isolated from adult rats by modified bone marrow culture method. BMSCs were inoculated in basic medium containing 10%fetal bovine serum, high glucose DMEM, 100 U/L penicillin, 100 U/L streptomycin and 2 mmol/L glutamine in the control group. BMSCs were inoculated in conditioned medium (basic medium, 10 mmol/L β-glycerophosphoric sodium, 10-7 mol/L dexamethasone, 50 mg/L vitamin C).

通过改良的骨髓培养法分离成年大鼠骨髓间充质干细胞，对照组以基础培养液(10%胎牛血清+高糖DMEM+100U/L青霉素+100 U/L链霉素+2 mmol/L谷氨酰胺)培养，实验组用条件培养液(基础培养液，10 mmol/Lβ-甘油磷酸纳，10-7 mol/L地塞米松，50 mg/L维生素C)进行诱导培养。

Soybean is a good dietary protein resource.11S and 7S (p-conglycinin) are major components in soybean. Glycinin is consisted of acidic subunits and basic subunits, Acidic and basic subunits formed five complexes: group I (A1aB2, A1bB1b,A2B1a) and II(A5A4B3, A3B4), P-conglycinin is consisted of a', a, and p subunits.

大豆蛋白质是优质的植物蛋白源，其主要组分为11S和7S(β-conglycinin)。11S是由酸性亚基A和碱性亚基B构成的，A和B形成五种复合体：ⅠA_(2aB_2，A_(1b)B_(1b)，A_2B_(1a)和Ⅱ(A_5A_4B_3、A_3B_4)；7S(β-conglycinin)是由α'，α和β三个亚基构成的。

Any student includes " the bad student ", there is this kind of psychological need too, know for the difference life , it will get used to gooding at thinking and scientific thinking gradually, and will reach the basic demand ( realizes not having the bad student's basic goal) of the course standard finally.

任何学生包括&差生&，也有这种心理需求，给差生机会，它会逐渐的养成善于思维和科学思维的习惯，并最终达到课程标准的基本要求。

At first, based on the basic profile of the horological gear, the main meshing course is analyzed to determine the original parameters and the basic parameters.

本文的研究旨在提出理想的修形曲线对齿轮进行修形以达到提高啮合效率的效果。

Based on the amount of terpenoids in Illicium, put various kinds of terpenoids in order by affiliated basic skeleton, the total contents of terpenoids in various kinds of basic skeleton type as the quantity property, utilized cluster analysis via SPSS and drew dendrogram of Illicium.

摘要以八角属植物中所含的萜类成分为基础，把各种萜类成分按照其所属的基本骨架类型进行整理，将各种骨架类型萜类的总含量作为数量性状，采用SPSS系统进行聚类分析研究，作出八角属的树形分支图。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样