maintain permanent contact 保持长期联系
The telemetry transmitter is used to keep permanent contact with the plane and supply technical data, flight configuration and positional information.
遥感发射器是用来建立与飞机稳定的通信，提供给飞机技术资料，飞机配置和位置信息。
If you are interested in applying for permanent migration and have already obtained a skills assessment, you may want to contact the department to discuss your intentions.
如果你有意向申请永居移民并且已经通过了技术评估，你可以和移民局联系讨论一下你的意向。
Permanent magnetic gear is a kind of transmission mechanism that can transmit torque and movement without contact.
永磁齿轮是一种新型传动机构，可在空间中无接触传递动力和运动。
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