cy.clom.e.tern.(名词)An instrument that records the revolutions of a wheel to indicate distance traveled.旋转计数器,里程计:一种用来表明移动距离的测量轮子转数的仪器An instrument that measures circular arcs.圆弧测定器:一种用于测定圆弧的仪器【引伸】cy.clomet.riccyclom.etryn.(名词)