这种防盗器安装隐蔽，不易被盗贼发现，同时它的信号经过单片机系统处理后方便和PC机通信，便于多用户统一管理。
The fixxing of this alarm is covert, which is discovered easily by cracksman. After has been processed by SCM, the signal of alarm communicates with PC, which is convenient for uniform management.
计划是经过协调统一管理以便获取单独管理时无法取得的效益和控制的一组互相联系的项目。
A program is a group of related projects managed in a coordinated way to obtain benefits and control not available from managing them individually.
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