RDBMS designers concentrated on optimizing I/O and tried to align the data access patterns with the block structure imposed by the drives.
RDBMS设计者的精力主要集中于优化I/O和设法用驱动器的块结构来安排数据访问模式。
If you need a unique pattern of a pumpkin light to make you stand out among all the Jack-O '-lanterns, try to download some free but interesting patterns here.
你可以点击这里下载更多的南瓜灯图案哦。
In this paper, EI and FAB-MS of tri and tetra-O-acetyl C-glucosides and C-galactosides were reported. Some characteristic fragmentation patterns of O-acetyl C-glycosides were discussed.
本文报道了四—O—乙酰基和三—O—乙酰基匍萄糖及半乳糖碳苷的电子轰击质谱和快原子轰击质谱，总结出一些乙酰基碳苷特有的裂解规律。
In this paper, EI and FAB-MS of tri and tetra-O-acetyl C-glucosides and C-galactosides were reported. Some characteristic fragmentation patterns of O-acetyl C-glycosides were discussed.
本文报道了四—O—乙酰基和三—O—乙酰基匍萄糖及半乳糖碳苷的电子轰击质谱和快原子轰击质谱，总结出一些乙酰基碳苷特有的裂解规律。
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