ringing switch trunk address 振铃接续中继线地址
outgoing trunk switch 出中继机键
out trunk switch 出中继机键
trunk ajar switch 行李箱未关严开关
SWITCH ASSY-TRUNK OPENER 行李箱开启开关
Implement basic switch security (including: port security, trunk access, management vlan other than vlan1, etc.)
实施基本的交换机安全策略(包括：端口安全、聚合访问、除VLAN1之外的其他VLAN的管理等等)。
The quick trunk injector comprises a reservoir pressure-meter, a spring balance, a transfusion pipe, a liquid valve, an air pinhead and a switch.
快速树干注射器主要由贮液瓶、压力表、弹簧秤、输液管、注药口、气门嘴、注射针头、开关等几部分组成。
This paper introduces an automatic multi-switch equipment controlled by the MCS-51 microcomputer on the crossbar exchange trunk line.
本文介绍了一种用MCS-51单片机控制的交换机多路外线自动接续装置。
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