Like a giant sundial, it demarcates both space and time.像个巨大的日晷, 它划分了时空.The intelligent sensor has self - calibration zero spot , self - demarcates, self - calibration function, different cylinder diameter hypothesis.智能传...

demarcates的音标：...

v.定…的界线，区分( demarcate的第三人称单数 )...