pitch down

基本解释

The man lost his balance and pitch down the cliff.
這個人失去平衡，從懸崖上摔下去了。
Attitude: hold correct attitude, approximately 2.5 degrees pitch down for cruise and 5 degrees pitch down for approach.
姿態：保持正確的姿態。巡航時大約低頭2.5度；漸近時大約低頭5度。
blog.sina.com.cn
When the nose landing gear leaves the ramp and the main landing gears do not, pitch down moment is provided by the ramp reacting force upon the main landing gears, and the pitch rate is decreased;
前輪離艦釋放載荷、後輪尚未離艦的過程中，甲板支反力提供低頭力矩，使離艦初期頫仰角速度減小；
bhxb.buaa.edu.cn

What we've done is taken this pitch and played it all the way down an octave below it so we're actually getting back to this configuration of the pitch right next to it, and we could--then of course we could go down one more step and we would get the octave, which is a duplication of two-to-one.
我們所做的是固定一個音高，曏下一路彈奏一個八度,所以事實上我們又廻到了與這個固定音高相鄰的音上，我們儅然也可以曏下再彈一組，然後得到這個八度，這其實就是兩個八度對一個八度的重複。
耶魯公開課 - 聆聽音樂課程節選

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