The field may be provided by permanent magnets or by electromagnets.外地可能提供的永磁材料,或由电磁铁.The rails of their Maglev train were made of about 100 magnets.他们所做的磁悬浮列车轨道采用了约100块磁铁.Magnets are used for the controller's attac...
We know about magnetism by the way magnets act.我们通过磁铁的作用知道磁性是怎么一回事.The N pole and S pole of two magnets will attract each other.两个磁体的N极和S极互相吸引.The entire ring has about 1000 magnets spaced at regular intervals.整个圆环由大约100...
Astronomers have discovered a distant galaxy.天文学家们发现了一个遥远的星系。The Galaxy consists of 100 billion stars.银河系由1,000亿颗恒星组成。The spaceman flew through the galaxy at the speed of light.太空人以光速穿越银河系.We report Chandra observations ...
从他们坐的地方就能看见主航道.From where they sat they could get a glimpse of the main stream.暴风雨使货船偏离了主航道.The storm has driven the cargo ship off of its main course.主航道乙段从11号灯浮标到22号灯浮标.Main Channel Part B is from light buoy NO . 11 to...