Numerical results show that the recurrent back propagation control neural network controller has good effectiveness for various kinds of reference speeds of the ultrasonic motor.

模拟实验结果表明，递归反向传播控制神经网络对多种形式的超声马达参考速度都有很好的控制效果。

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AMD's Radeon HD 7770 and 7870 reference cards already sport 1GHz clock speeds, but so far the high-end flagship 7970 has been stuck at 925MHz.

ENGADGET: AMD Radeon HD 7970 could get 'GHz Edition', put the hurtz on NVIDIA

" In addition to talking speeds and feeds, though, Intel also showed off a reference laptop with a Haswell chip inside, a notebook called "North Cape.

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