Medium power is a controlling force that the media have to social life within the range of its function.
媒介权力是传媒在职能范围内对社会生活的支配力量。
As one of the transmission media for short range indoor wireless data communications, Infrared (ir) medium has the features of low cost and low power consumption.
红外线作为室内通信无线传输媒质，具有低成本、低功耗等特点。
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