求一篇描述乡村生活与城市生活哪个更好的英语作文

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 12:54:47
求一篇描述乡村生活与城市生活哪个更好的英语作文

求一篇描述乡村生活与城市生活哪个更好的英语作文
求一篇描述乡村生活与城市生活哪个更好的英语作文

求一篇描述乡村生活与城市生活哪个更好的英语作文
扭矩就是发动机输出的动力的扭力力矩,这个关系到加速的性能,扭矩大的话加速性比较好,通常去买车他会告诉你“最大扭矩”,格式是xxxx Nm/ xxxx rpm,意思是最大扭矩是xxxx 牛·米,在xxxx转/分的时候输出 轴距是指前后车轮轮轴之间的距离,这个关系到车在行驶,特别是高速行驶时的稳定性,当然也会对内部空间造成影响,单位是mm 扭距:发动机的指标之一,活塞在汽缸里的往复运动,往复一次做有一定的功,它的单位是牛顿.在每个单位距离所做的功就是扭矩了.它是使物体发生转动的力,在功率固定的情况下,它与发动机转速成反比关系,转速越高扭距越小,反之则越大,它反映汽车在一定范围内的负载能力.它反映在汽车性能上,包括加速度、爬坡能力以及悬挂等.在某些场合,例如起步或在山区行驶时,扭距越高的车运行反映越好.以同类发动机轿车做比较,扭距输出越大承载量越大,加速性越好,爬坡能力越强,换档次数越少,对汽车的磨损也会相应减少.反正,简单的说,扭距大的发动机就是“力气大”.举个通俗的例子,比如,像人的身体在运动时一样,功率就像是身体的耐久度,而扭矩是身体的爆发力.对于家用轿车而言,扭矩越大加速性越好;对于越野车,扭矩越大其爬坡度越大;对于货车而言,扭矩越大车拉的重量越大.在排量相同的情况下,扭矩越大说明发动机越好.在开车的时候就会感觉车子随心所欲,想加速就可加速,“贴背感”很好.现在评价一款车有一个重要数据,就是该车在0-100公里/小时的加速时间.而这个加速时间就取决于汽车发动机的扭矩.一般来讲,扭矩的最高指数在汽车2000-4000/分的转速下能够达到,就说明这款车的发动机工艺较好,力量也好.有些汽车在5000/分的转速左右才达到该车扭矩的最高指数,这说明“力量”就不是此车所长.

Whether to live in the city or to live in the country is really a problem for some people because both choices have advantages and disadvantages.
Some people like living in the city. They say ...

全部展开

Whether to live in the city or to live in the country is really a problem for some people because both choices have advantages and disadvantages.
Some people like living in the city. They say that there are many factories in the city and there are more job opportunities in the city than in the countryside. They also say that city life is more colorful and meaningful because there are many public facilities there such as supermarkets and entertainment centers. But some people like living in the countryside. They say that life in the countryside is closer to nature, quieter and cleaner. Country people don’t suffer from the housing problem, air pollution, noise pollution, traffic jams and traffic accidents.
  As for me, according to the situation of China, I prefer to live in the city. An important reason is that the development of city is far beyond that of country. Some countries, especially in remote areas, are still very poor and backward. The life there is still very tough and difficult. Nevertheless, nothing is absolutely, some people still would rather choose live in the country, it is really up to yourself. Remember, happy and comfortable are the purposes.

收起