轴角编码器 shaft angle encoder ; [电子] shaft encoder ; shaft-position encoder

光电轴角编码器 optical electric axial angle encoder ; Photoelectric Shaft-position Encoder ; photoelectric shaft encoder ; optical-electric encoders

数字式轴角编码器 [计] digital shaft encoder

绝对式光电轴角编码器 The optoelectronic axis-angle encoder