It seems that: 1. For the power law distribution (PLD) cases, the DAW in the cold dusty plasma propagate quicker than that of the mono-sized dusty plasma. It is found that the DASW for PLD dusty plasmas is lower than that of the mono-sized dusty plasmas.

• 结果表明:1.；将尘埃颗粒大小呈Power Law Distribution (PLD)分布的双温度离子冷尘埃等离子体中的尘埃声孤波与尘埃颗粒大小相同的尘埃等离子体中的尘埃声孤波相比；其传播速度满足v_0>(?)