A pitch controller rotates each blade around a bearing, setting it to the best angle for the wind speed.
同时间距控制装置会根据风速旋转安装在轴承上的风叶，保持在最佳角度。
These actions include things like depressing a key (NoteOn), releasing a key (NoteOff), changing a synthesizer program or patch setting and movement of a pitch wheel to alter a note's pitch.
这样的操作包括按键 (NoteOn)，释放键件 (NoteOff)，更换合成器程序或者修补齿轮的设置或者移动齿轮来改变音符的音调。
Cast steel pulley with wall unevenness, many hot pitch points and narrow feeding channel is difficult to be fed by setting up a head.
铸钢皮带轮，壁厚不匀，热节点多，补缩通道狭窄，很难用设置冒口的方法给予补缩。
Cast steel pulley with wall unevenness, many hot pitch points and narrow feeding channel is difficult to be fed by setting up a head.
铸钢皮带轮，壁厚不匀，热节点多，补缩通道狭窄，很难用设置冒口的方法给予补缩。
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