Install the anti-rotation device to prevent impeller from spinning.

安装防倒转装置以防止叶轮倒转。 …

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An anti-reverse rotation device prevents the pump from turning backwards which would increase core bypass flow and pump starting current.

止逆装置用于防止泵反转，反转将导致堆芯旁通流量增加和泵启动电流增加。

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The tracking rotation device has the advantages of high tracking accuracy and reliability, simple structure, strong real-time performance and easy realization.

在本 发明中，跟踪准确性、可靠性高，且结构简单、实时性强、易于实现。

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This would give you a scroll view that resized as the view controller's view resized (such as on device rotation), and the image view would be a scrolling subview.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog