sword iron
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一个锁可以拥有很高的竖条但仍然处于绿色。
A lock can have a very high bar but still be a green color.
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每个竖条的高度(相对于其他竖条)显示锁堵塞的程度。
The height of each bar shows, relative to one another, which lock blocked the most.
事务1读取某条特定记录并对该行应用一个锁。
Transaction 1 reads a specific record and places a lock on that row.
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