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制度性天花板是一大中国式难题。()
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中国精神主要包括民族精神和时代精神两个方面。()
Which dimension decides output torque of a hydraulic piston motor?
High speed hydraulic motors usually provide low torque.
______is the device that provides amplification(the increase in current, voltage, or power of a signal)without appreciably altering the original signal.
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