同时测定了皮质醇浓度及心率与收缩压之乘积（RPP）值。

The concentration of cortisol and rate-pressure product (RPP )were measured .

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伏特量交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积。

The product of the effective values of the voltage and current with the cosine of the phase Angle between current and voltage in an alternating-current circuit.

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在实际系统中，无源性是系统耗散性概念的一个特例。无源性正是供给率为输入输出信号之乘积形式的特例。

We consider passivity of system, a special class of dissipative systems, in which supply rate is represented by the product of the system input and output.

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