ringing control meaning in Chinese

振铃调整
振铃控制

Fddi . information systems - fiber - distributed data interface - hybrid ring control
信息系统-光纤分布数据接口
Hrc hybrid ring control
混合环控制
Fddi . information processing systems - fibre distributed data interface - hybrid ring control
信息处理系统.光纤数据分布式接口
Unitized bonnet / base design , rugged construction and 2 - ring control make the 41a safety relief valve extremely dependable in terms of pop action , seat tightness and repeatability
采用阀盖/基座结构，坚固耐用，双环控制，这使得型号41a安全阀在弹起作用、阀座密封和重复性等方面特别稳定可靠。
In addition , there is 8 on - off signal data input ( di ) passways ( 24 vdcs light separate ) ; 8 on - off signal isolated data output ( do ) passways ( contact without power , 1a / 220v ) ; 4 analog signal data output passways ( 4 ~ 20ma ) , every of them can be set as a certain analog signal ' s close ring control output passway
另外，还有8路开关量输入( di )通道( 24vdc光隔) ； 8路隔离开关量输出( do )通道(无源触点， 1a 220v ) ； 4路模拟量输出( 4 20ma )通道，每一路均可设定为某一路模拟量输入的闭环控制输出。