托福詞彙

path followed by a moving object

軌跡；運動路徑

framework of connected members often forming triangles

桁架

rotating machine extracting energy from fluid flow

渦輪機

all space time matter and energy

宇宙

region containing very little matter

真空

rate of position change including direction

速度；包含方向的位置變化率

move repeatedly back and forth

振動；使振動

repeated back and forth movement

振動

range of electromagnetic radiation visible to humans

可見光譜

electric potential difference between two points

電壓；電位差

three dimensional space occupied by a body

體積

distance between equivalent points in successive wave cycles

波長

gravitational force acting on an object

重量；重力

compact stellar remnant without sustained core fusion

白矮星