The formula of Erlang B is inferred to hold for any M/G/C/C system with general service time distribution,but rigorous proof is absent.是什么意思_The formula of Erlang B is inferred to hold for any M/G/C/C system with general service time distribution,but rigorous proof is absent.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句