If the size of the reallocated block is smaller than the original block, the block is split and the extra block is returned to the free tree with the required size block being returned to the caller.
如果重新分配的块小于原来的块，那么把它分割开，多余的块返回给空闲树，请求的块返回给调用者。
2
The imbalance of data influenced the analysis results in split-plot design and strip-plot design much heavier than in random block design.
数据缺失对随机区组设计分析精准度的影响小，而对裂区和条区设计分析精准度的影响大。
3
Similar entries will group together in the index, so the index blocks will split as necessary and new entries will end up all hitting the same block until it too fills up and splits.