失去联锁 meaning in English

loss of interlocking

While for disorder or repair , these basis equipments may lead to the electric interlocking apparatus unused totally or locally . so in that interim period , the station must start a safe and reliable equipment into work immediately . thus a new project must be advanced by the railway research department that how to operate the reception and departure of train safely in improper conditions
但是这些基础设施由于设备故障或例行的设备检修，都可能使全站的集中设备局部或全部失去联锁，那么在此期间的行车作业保证就需要一种新的可随时使用的、又极为可靠的安全设备来暂时替代。