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A positive sign signifies the assignment of a tape and a negative sign signifies that the tape has not been assigned.
正号表示已经分配而负号表示该磁带还没有被分配。
youdao
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A positive sign signifies the assignment of a tape and a negative sign signifies that the tape has not been assigned.
正号表示已经分配而负号表示该磁带还没有被分配。
youdao