自行车

He became the first man to cycle the Darien Gap in Panama, and the first to cycle from the top to the bottom of the American continent.

而且， 他第一个骑自行车穿越了巴拿马达里沼泽，也第一个从北到南骑自行车穿越了美洲大陆。

In conclusion, this study investigated the effects of lower limb muscular exercise with bicycle ergometric exercise during 30 d HDT bed rest on limb muscle and cardiovascular system. We found that limb muscular exercise and the bicycle ergometric exercise in some extent can improve adverse effects following simulated microgravity.

总之，本实验通过比较30 d头低位卧床期间下肢肌力训练和自行车功量计训练对下肢肌肉和心血管系统的影响，发现下肢肌力训练和自行车功量计训练可在一定程度上对抗模拟失重所致的不良影响。

These results suggested that 30 d HDT bed rest has induced significant reduction in heart systole function and heart pump function. The limb muscular exercise and the bicycle ergometric exercise to some extent can improve the heart systole function; however, the bicycle ergometric exercise was better.

结果提示，30 d头低位卧床可引起心脏收缩泵血功能下降，下肢肌力训练和自行车功量计训练可在一定程度上改善心脏收缩功能，其中自行车功量计训练的对抗效果更佳。

The cardiac systole and pump functions decrease significantly during 30 d HDT bed rest. The limb muscular exercise and the bicycle ergometric exercise may improve the cardiovascular system to some extent. Further, the bicycle ergometric exercise is the better one.

30 d头低位卧床可引起心脏收缩泵血功能下降，下肢肌力训练和自行车功率计训练可在一定程度上改善心血管功能，其中自行车功率计训练的对抗效果更佳。

The subjects in the lower limb muscular exercise group performed exercise with a lower limb muscular exercise and the subjects in the bicycle ergometric exercise group performed exercise with a bicycle ergometric exercise during HDT bed rest.

对照组仅-6°HDT卧床30 d，不进行任何处理，下肢肌力训练组和自行车功率计训练组在30 d卧床期间分别进行下肢肌力训练和自行车功率计训练。

We are specialized bicycle parts facty ,we acterized ourself in first rate management,abundant economy strength,modern production crafts equipments,stylish products,high qulity,variety of goods.All the success past made us a good fame in China an wld bicycle field.

本公司是自行车配件专业生产厂家，公司具有一流的组织管理、雄厚的技术实力、现代化的生产工艺和设备，产品款色新、质量高、品种全，在国内外自行车市场具有较高知名度。

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？

If you're not sure which way to go, ask your local bike dealer and test ride both a hardtail and full suspension bike.

如果你不知道走那条路，让你的经销商和当地自行车试乘既硬朗，全面暂停自行车。

The biggest expense will be a mountain bike, although any bike can be used the most popular one is a hardtail that has front suspension.

最大的成本将是一个山地自行车，自行车虽然任何可以使用的最流行的是一种硬式具有前悬挂。

The biggest expense will be a mountain bike, although any bike can be used the most popular one is a hardtail that has front suspension.

最大的代价将是一个山地自行车，虽然任何可用于自行车最流行的一个是hardtail了前悬挂。

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。