pitch down

基本解释

The man lost his balance and pitch down the cliff.
这个人失去平衡，从悬崖上摔下去了。
Attitude: hold correct attitude, approximately 2.5 degrees pitch down for cruise and 5 degrees pitch down for approach.
姿态：保持正确的姿态。巡航时大约低头2.5度；渐近时大约低头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;
前轮离舰释放载荷、后轮尚未离舰的过程中，甲板支反力提供低头力矩，使离舰初期俯仰角速度减小；
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.
我们所做的是固定一个音高，向下一路弹奏一个八度,所以事实上我们又回到了与这个固定音高相邻的音上，我们当然也可以向下再弹一组，然后得到这个八度，这其实就是两个八度对一个八度的重复。
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