pr precedence ratepriority levelpriority sequence优先权;优先级: priority安全优先级: safety priority包优先级: packet priority level编目优先级: cataloged priority程序优先级: program priority下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:优先级,即可在微信中查询翻译