短语词组短語parallel half -subtracter 竝行半減器half -subtracter 半減法器;半減器all -optical half-subtracter 全光半減器HS half subtracter 半減法器serial half subtracter 串行半減器;繙譯;串行半減器英語parallel half subtracter 平行半減器subtracter half 竝列半減器 返回 half subtracter