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Should not be called "喷气发动机",
送交者: oldfarmer 2015月09月19日00:01:59 于 [世界军事论坛] 发送悄悄话
回  答: basic physics: kinetic energy oldfarmer 于 2015-09-18 23:57:17
because it's not a jet engine. It's a rocket! which requires no air to operate.
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  jet propulsion - gopher1 09/19/15 (548)
    Jet propulsion can be divided - oldfarmer 09/19/15 (496)
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