From professional translators, enterprises, web pages and freely available translation repositories.
改进用于紧急通知的公共广播系统
upgrading of the public address system for emergency announcements
Last Update: 2016-12-04
Usage Frequency: 2
Quality:
公共广播系统(套)
public address system (set)
Last Update: 2016-12-04
Usage Frequency: 3
Quality: