求翻译：本电路用NE555作为时基电路，GL9561为报警集成电路。触发电路由水银开关导通，灵敏度高，声音响亮，电路制作简单，不需调试，能较好的为人们服务。是什么意思？

This circuit using NE555 as time-base circuit, GL9561 alarm IC. Trigger circuit by a mercury switch breakover, high sensitivity to sound louder, making simple circuits without debugging, better services for people.

This circuit using 555 NE GL circuit, and as a base for 9561 alarm circuit. Trigger circuit from mercury switches, high sensitivity, the loud, circuit debugging, producing simple, it is not necessary for people to better service.

This electric circuit with NE555 took the time base circuit, GL9561 is reports to the police the integrated circuit.Triggers the electric circuit by the mercury cut-off breakover, the sensitivity is high, the sound is resounding, the electric circuit manufacture is simple, does not have to debug, ca

This circuit using NE555 as time-base circuit, GL9561 alarm IC. Trigger circuit by a mercury switch breakover, high sensitivity to sound louder, making simple circuits without debugging, better services for people.

This circuit using NE555 as time-base circuit, GL9561 alarm IC. Trigger circuit by a mercury switch breakover, high sensitivity to sound louder, making simple circuits without debugging, better services for people.