precedence of an operator

• 算符的优先权

precedence of an operator的用法和样例：

例句

1. Why would an administrator change the value of the spanning-tree priority of a switch?
   网管为何要修改交换机上关于生成树协议中用到的优先权呢？
2. An access strategy with the combination of channel reservation and preemptive priority is given to a handoff voice call.
   在本方案中为具有越区切换请求的话音呼叫提供了预留切换信道和强占数据业务的优先权相结合的接入策略。