To solve the shortage of asynchronism in CORBA traditional invoke technology, this paper studys the two asynchronous invoke model: callback and polling.
针对CORBA传统调用技术在异步性方面的不足，研究了回调和轮询两种异步调用模型。
The Adamo has no shortage of wireless connectivity possibilities. This machine was the low-end model, so we only received two of the three wireless types.
该阿达莫没有无线连接的可能性短缺。本机是低端型号，所以我们只收到三个无线两类。
Taking stock total cost and rate of shortage as two performance indexes of the system, simulation model was created. The two indexes weighted average, synthesis coefficient was given.
以库存总费用和缺货率为系统性能指标，建立仿真模型，将二者加权平均给出策略的综合系数的计算公式。
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