Settingspeed-limit standards is a complex technical subject, because of many speed factors.
影响速度的因素有很多，因此制定限速标准是一项复杂的技术工作。
2
Characters: It is mainly characterized by high speed, free options of settingspeed, ease of operation, table performance and safety.
主要特点：高速设计，可自由选择设定设备的车速，操作简便，稳定性高，安全。
3
Its real-time speed values are directly displayed by LED, and instantaneous speed values are also displayed by the push-buttons and prior settingspeed values.