The symbols and time durations for different transitions and places are shown in Table 2.1.不同转变和地点的符号和延续时间见表2.1 Table 2.1.The time durations associated with transitions and places 表2.1 与转变和地点相关的延续时间 Time duration:持续时间,延续时间
The symbols and time durations for different transitions and places are shown in Table 2.1.不同转变和地点的符号和延续时间见表2.1 Table 2.1.The time durations associated with transitions and places 表2.1 与转变和地点相关的延续时间 Time duration:持续时间,延续时间