queuing theory 
论;研究等待时间的等候理论 queuing model 
模型;等候模式
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by-bidder,
by-bidding,
Byblos,
by-blow,
by-business,
by-catch,
BYD,
Bydgoszcz,
bydrazotoluene,
bydromphalus,
相似单词
queue-jump,
queue-jumper,
queuer,
queues,
Queuetopia,
queuing,
quezal,
Quezon,
Quezon City,
quiartic,