词汇	letter shift signal
释义	letter shift signal 换字母档信号
随便看	mechanical damage of insulator mechanical damped type galvanometer mechanical damper mechanical damping mechanical damping ring mechanical Daqu-making mechanical data mechanical data processing mechanical date watch mechanical davit Mechanical dead space mechanical decladding mechanical decorticate mechanical decoupler mechanical deep-loosening mechanical defect mechanical defense system mechanical deflashing mechanical deflection mechanical deflector mechanical defoaming mechanical deformation mechanical deformation capability Mechanical deformation joining mechanical deformation vacuum gauge