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1. Oxford Dictionary

   direct injection

   • n.
     (in diesel engines) the use of a pump to spray fuel into the cylinder at high pressure, without the use of compressed air

   • noun: direct injection, plural noun: direct injections

2. • 釋義

   n.

   名詞

   • 1. (in diesel engines) the use of a pump to spray fuel into the cylinder at high pressure, without the use of compressed air a direct-injection diesel