To start the engine, one must first light the small flame beneath the hot ignitiontube and crank the engine once using the crank; these preparations take only a minute.
要启动发动机，首先得点燃热管，再转动曲柄轴，发动机便启动，这些准备工作只需一分钟。
2
Electrical wire is sheathed in metal fire-retard tube, to prevent ignition caused by fire in battery test.
电线外套均套有金属防火管，有效阻止电池试验过程着火而燃烧的现象；
3
Experimental investigation on ignition and combustion of supersonic premixed hydrocarbon fuel-air mixture has been conducted in the combination facility consisting of a shock tunnel and a shock tube.