count-based英'kaʊntb'eɪst美'kaʊntb'eɪstCOCA³¹⁵¹¹¹⁺⁴ 基本例句 基数¹⁰⁰ Typically the traffic-count-based VMT estimation has better accuracy than the latter one; however, it requires a large number of actual data from roads. 前者是被美国各州广泛采用的一种方法，一般而言精确度比后者高许多，但是这种方法需要大量实测的交通量数据。 fabiao