育才学习网1. 用英语写一篇指南针的作文
The compass
A compass is a simple instrument discrimination range,also known as thecompass,according to "record" on the earliest records appeared in the Warring States period magnetic mountain area.The compass was formerly one of thefour great inventions of ancient China's compass,is the result of ancient Chinese labor people understanding of magnetic objects in the long-term practice.
The main components are mounted on a shaft can freely rotate the needle,the needle can remain in the tangent magnetic radial direction on the ground under the action of magnetic field,magnetic needle points to the geographical North pole pole,direction can be identified by this performance.Commonly used in navigation,geodesy,travel and military etc..
指南针
指南针是一个简单的仪器歧视的范围，也被称为指南针，根据"；记录"；对记载最早出现于战国时期磁山地区.指南针的前身是一家中国古代四大发明的指南针，是中国古代劳动人民在长期的实践中的磁性物体的理解结果.
主要部件安装在轴上可以自由转动的磁针，针能保持在磁子午线的切线方向上的磁场的作用下，地面，磁针指向地理北极极点，利用这一性能可以辨别方向.常用的导航，大地测量学，旅游和军事等.