A free block is a block of memory that has been released.

“可用块”是已释放的内存块。

youdao

When DB2 encounters an INSERT on an MDC table, it looks for a free block.

当DB 2碰到对mdc表的INSERT操作时，它寻找一个空闲的块。

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It shows operation is simple and convenient and reliability is higher by actual application since burn-free block making machine is used with touching panel adopted.

实际应用表明，采用触摸屏的免烧砌块成型机操作更简便，可靠性更高。

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