intake duration 中文意思是什麼

intake duration 解釋
進氣持續角
  • intake : n 1 吸入，納入，收納。2 進水口 （opp outlet）; 輸入端，（礦井的）進風巷道，通風孔。3 吸氣，進氣。...
  • duration : n. 1. 持久，持續。2. 持續時間，存在時間；期間。adj. -al
  1. It is recommended that hong kong citizens maintain a dietary intake of 800mg of calcium in a day, perform 3 times of loading bearing activities ( of 30 minutes duration ) each week, and avoid cigarette smoking and alcoholism

    要維持健康骨骼，除了避免吸煙、飲酒外，每日應吸取800毫克鈣，每周進行三次約三十分鐘的負重運動。
  2. Intake duration angle

    進氣持續角
  3. Fuel efficiency and power output and emission of an internal combustion engine can be significantly improved by optimizing intake and exhaust valve timing and duration and lift as speed changes during operation

    改變發動機氣門的開啟相位、持續時間和升程是改善發動機性能，提高熱效率和減少有害排放的一種重要方法。
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