Because the DB2 optimizer does not know the values of the parameter markers in the prepare phase, a one-size-fits-all access plan is generated that cannot be optimal in all cases.
由于DB 2优化器在准备阶段不知道参数标记的值，因此生成了一个在所有情况下都不是最优的万能(one - size - fits - all)访问计划。
Phase encode spreading optical code division multiplex access (OCDMA) communication system is one of the research focuses in recent years.
相位编码扩谱光码分多址（OCDMA）通信系统是近年来OCDMA研究的热点之一。
Phase encode spreading optical code division multiplex access (OCDMA) communication system is one of the research focuses in recent years.
相位编码扩谱光码分多址（OCDMA）通信系统是近年来OCDMA研究的热点之一。
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