求翻译：试验结束后，开启风扇排出废气和烟雾，开关流量计，将向右旋转面板上的气体旋钮开关旋回“OFF”的位置 ，将保险拉杆向上，关闭电源开关并清洁燃烧室。是什么意思？

After the test, turn on the fan exhaust gases and smoke, switches, flow meters, gas in the rotating panel rotary switch cycles the "off" position to the right insurance lever up, turn off the power switch and clean the combustion chamber.

After end of the test, turn on fans, exhaust fumes and flow meter and switch to the right, rotate the panel of the gas knob switch back to the position " "OFF insurance link will be up and turn off the power switch and clean combustion.

After the experiment had ended, opens the ventilator to discharge the waste gas and the smog, the switch flowmeter, towards right the surface of rotation panel gas knob switch will cycle “OFF” the position, will be upward the safe tension bar, closes the power switch and the clean combustion chamber

After the end of the test, turn on the fan exhaust and smoke, switch flowmeter, cycles the gas knobs on the Panel to the right switch "OFF" position, insurance lever up, turn off the power switch and clean combustion chamber.

正在翻译，请等待...