mark signal meaning in English

传号信号
符号信号

To make use of the maximum signal margin with the maximum scanning distance tolerance , the switching threshold should be set at the mid - way point between the background and mark signals
在使用具有最大扫描距离偏差的最大信号边限时，转换门限应该设置在背景与标识信号的正中间？
The crt or oscillograph to display the waveform of mark signals is not needed because the software adopted fuzziness addressing and auto track algorithm , so the cost of equipment improvement is reduced
软件算法上，采用模糊寻址、自动跟踪方式，避免了利用波门精确寻址需要的显示设备，降低了对设备改造的成本。
This digital pattern generator composes of eight parts : interface circuit unit , dual - port sram unit , dsp unit , dac unit , expose / mark signal detection control unit , mark signal diction unit and final expose shape registers unit
本论文中的新型图形发生器由接口电路、双端口存储电路、数字信号处理电路、数模转换电路、曝光标记检测控制电路、标记检测电路、最终曝光数据寄存器单元和束闸控制电路构成。