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rayl [reɪl] n
gen. 雷耳; 瑞利1 牛顿/米 2 声压能产生 1 米/秒的质点速度的声阻抗率，声阻抗率单位
oil 雷耳 (1牛顿/米2声压能产生1米/秒质点速度的声阻抗率)
tech. 瑞耳 (声阻抗率单位)
rayl: 2 phrases in 1 subject
Textile industry2

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