Cylinders used to open the master switch, and then clockwise rotating low pressure regulator screw table to compress the main spring and transmission film, pad, and push-rod spring open the trap door.
英
美
- 使用時(shí)先打開(kāi)鋼瓶總開(kāi)關(guān)，然后順時(shí)針轉動(dòng)低壓表壓力調節螺桿，使其壓縮主彈簧并傳動(dòng)薄膜、彈簧墊塊和頂桿而將活門(mén)打開(kāi)。
