在块分配功能模块中实现耗损平衡策略需要考虑到数据更新速度和块擦除频率之间的关系。
Implementing the policy in block allocation module needs to consider the relation between the rate of data refreshment and the block-erasing frequency.
垃圾收集器将有效块移动到日志的尾部，跳过无效或废弃块，并擦除它们（参见图2）。
The garbage collector moves valid blocks to the tail of the log, skips invalid or obsolete blocks, and erases them (see Figure 2).
这两种内存类型在擦除块方面有所不同。
The process of erasing a block differs between the two memory types.
如果需要撤销操作，那么必须擦除整个块(将所有数据重置回状态1)。
If the reverse operation is needed, then the block must be erased (to reset all bits to the one state).
在这两种情况中，对选择的块执行擦除操作，然后将其置于free列表(参见图3)。
In both cases, the selected block is erased and placed on the free list (see Figure 3).
在NOR设备中，flash内存中的每个块可被擦除100,000次，而在NAND flash内存中可达到一百万次。
In a NOR device, each block in the flash memory can be erased up to 100,000 times. NAND flash memories can be erased up to one million times.
擦除磁盘块时如何指定擦除模式？
How can I specify erasure patterns when erasing disk blocks?
模拟实验数据结合量化了的使用寿命延长度，表明数据块的擦除分布均匀，效率较高，有效延长了闪存的使用寿命。
The result comes out of simulation tests shows more even distribution, better efficiency and longer life cycle with a formula to measure the DFLCP(Degree of Flash Life Cycle Prolongation).
第二个主要的区别在于编程，但同时和擦除相同的是，针对不同的厂家，编程的块大小也是不同的。
The second major difference relates to programming and the programming size but here again there is not a clear standard across the industry.
响应于至少一个预定条件被满足，将所述第一日志块指定为可重用日志块，而不从其擦除数据。
The first log block is designated as a reusable log block without erasing the data therefrom in response to at least one predetermined condition being satisfied.
让阳光洒进来，把一切都清洗干净。但愿我有一块巨大的橡皮，能擦除一切，从我自己开始…重新做人。
Just let the light in, clean everything out. If I could take a giant eraser and rub out everything, starting with myself...
让阳光洒进来，把一切都清洗干净。但愿我有一块巨大的橡皮，能擦除一切，从我自己开始…重新做人。
Just let the light in, clean everything out. If I could take a giant eraser and rub out everything, starting with myself...
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