科技英语900句
一,时间1. When a wire is broken by bending it back and forth rapidly, some of the work is transformed into heat and the wire gets hot.
当把导线快速地(通过)来回弯曲折断时,部分功就转换成热,所以导线变热.2. When the moon changes it position, so do the orientation of the tide-generating forces and the position of the equilibrium tide.