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。

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Only when the train's speed and pitch changed did the windowpane become silent.

只有当火车的速度和距离改变了，窗玻璃才静止下来。

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In addition to the action, the command includes other parameters such as a channel number (0-15), note pitch (0-127) and the speed a key was depressed (velocity).

除了操作之外，这些命令还包括其他参数，例如频道数(0 - 15)，音符的音调(0 - 127)以及按键的速度(速率)。

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If the scientists change the pitch speed, the robot will relearn the task all over again.

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The idea is to create software that would analyze the voices of cellphone users by speed, pitch, volume range and cadence and morph those frequencies so the speakers better resemble each other.

FORBES: Stanford Developing Vocal Cosmetics Technology To Make Cellphone Talkers More Likable

Substantially more complex than previous aircraft, the new plane required the pilot to attend to the four engines, a retractable landing gear, new wing flaps, electric trim tabs that needed adjustment to maintain control at different airspeeds, and constant-speed propellers whose pitch had to be regulated with hydraulic controls, among other features.

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