2,876 الفاظ اور فقرے · 21 موضوعات
path followed by a moving object
轨迹；运动路径
transmitting light so objects can be seen clearly
透明的
framework of connected members often forming triangles
桁架
rotating machine extracting energy from fluid flow
涡轮机；透平；轮机
all space time matter and energy
宇宙
region containing very little matter
真空
rate of position change including direction
速度；包含方向的位移变化率
move repeatedly back and forth
振动；使振动
repeated back and forth movement
振动
range of electromagnetic radiation visible to humans
可见光谱
electric potential difference between two points
电压；电势差
three dimensional space occupied by a body
体积
distance between equivalent points in successive wave cycles
波长
gravitational force acting on an object
重力；重量
compact stellar remnant without sustained core fusion
白矮星