求翻译：说明：通风采用混合式通风，洞外并联压入式通风机。洞内设置1台移动式通风机，距掌子面80m为宜。靠近通风机段采用金属筒。是什么意思？

Note: the use of hybrid ventilation ventilation, parallel hole-in fan pressure. Set inside a mobile fan, 80m away from the working face is appropriate. Close to the fan section of the metal tube.

Description: ventilation used outside mixed-dong and the ventilation, air-pressure into. Inside the hole 1 mobile ventilator settings, 80 m away from the palm-son. Near ventilator used metal tube.

Explanation: Ventilates uses the mixed style to ventilate, outside the hole presses in the type ventilator parallel.In the hole establishes 1 motion type ventilator, is apart from face 80m is suitable.The nearness ventilator section uses the metal cylinder.

Description: ventilation using combined ventilation, outside parallel loaded fan. Hole set 1-mobile fan from the palms face 80m. Close to the fan using a metal tube.

Explanation: Ventilates uses the mixed style to ventilate, outside the hole presses in the type ventilator parallel.In the hole establishes 1 motion type ventilator, is apart from face 80m is suitable.The nearness ventilator section uses the metal cylinder.