工作中使用汽油吹焰管时，请将灭火器放在近旁。
由于火焰筒轴线平行于发动机轴线，燃气轮机燃烧室的联焰管与火焰筒正交。
The axis of a flame tube being parallel to that of an engine, the flame crossover tube of a turbine combustor is usually orthogonal with respect to the flame tube.
结果显示，两种吸虫的排泄系统均由焰细胞、排泄管和排泄囊组成。
The result showed that the excretory system of each consists of the flame cells, the excretory tubes and the excretory bladder.
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