bypass duct（旁通管）是什么意思？音标发音+图解场景

旁通管 /ˈbaɪpas ˈdʌkt/ n

English: bypass duct · 旁通管

释义：Channel that conducts some of the air sucked in by the fan, which contributes to the engine’s thrust.

这个词出现在以下图解场景（1）