摘要：本文介绍基于单片机at89c 51控制的自动往返电动小汽车控制系统的硬件和软件设计。

Abstract: This paper introduces a kind of hardware and software design, which is the system of automatically back and forth electric car controlled by MCU AT89C51.

youdao

你无需扔掉你的小汽车代之以自行车或一辆全新的电动汽车，依照以下简单的开车省油技巧，即使是非常耗油的车辆也可以成为绿色机器。

You don’t have to throw away your car in favor of a bicycle or a brand-new electric car. Even your gas-guzzling vehicle can be a green machine if you follow these simple fuel-saving driving tips.

youdao

预计我国2050年燃料电池汽车将占到小汽车保有量的20%左右，纯电动汽车占30%左右，各种混合动力汽车将占50%左右。

It is predicted that by 2050 fuel cell vehicles will represent about 20% of all cars in China, BEVs will represent about 30% and hybrid vehicles will represent about 50%.

youdao

在中国，电动自行车正把小汽车远远甩在后面。

In China, electric bicycles are leaving cars in the dust.

youdao

在中国，电动自行车正把小汽车远远甩在后面。

In China, electric bicycles are leaving cars in the dust.

youdao