2) ) * l

请输入您的数学问题…… P = (\rho _p / \rho _t)^(1/2) * (v_0 / (R_t / \rho _t)^(1/2) ) * L

问题

P = (ρ_{p} / ρ_{t})^{(} 1/2) * (v_{0} / (R_{t} / ρ_{t})^{(} 1/2)) * L

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