求翻译：设置防火防爆通风系统，风机采用防爆离心风机，电机为防爆电机，风管法兰连接处须跨接。是什么意思？

Set the fire and explosion ventilation system, fans, explosion-proof centrifugal fan, the motor is explosion-proof motor, air duct flange connections shall jumper.

Set up a firewall explosion-proof ventilation system, air-powered blast-resistant centrifugal blower, motor, and the explosion-proof motor wind pipe flanges shall be made.

The establishment fire protection explosion-proof ventilation system, the air blower uses the explosion-proof gentrifugalism air blower, the electrical machinery for guards against explosions the electrical machinery, the air hose flange attachment point must bridge.

Setting fire explosion-proof ventilation systems, fans use explosion-proof centrifugal blowers, motors explosion-proof motor, wind pipe flange connections need to crossover.

正在翻译，请等待...