【机】 直接喷射

摘要汽油缸内直喷已成为新一代汽油机提高经济性、降低排放的重要手段。

direct print

direct labor hour rate

on-column direct laser detection

direct intent

direct cruuent arc welder

direct-pick-up receiver (repeater receiver)

direct-current telegraphy, compensating variations

direct-current system【电】;straight flow system【航】