In this example, DB2 performed 1150 lock escalations within an hour time period.
在这个示例中，DB 2在一小时中增加了1150个锁。
If the lock cannot be obtained in the timeout period, null is returned to the caller.
如果在超时期间无法获得锁，则向调用方返回null。
A visibility timeout value, in seconds, is specified when the receiving application reads a message from a queue. This ACTS more like a lock and ensures that, for the specified time period.
当接收消息的应用程序从队列中读取一个消息时，指定可见性超时值(以秒为单位)。
Automatic lock - an automatic lock is switched on after a specified period of inactivity in minutes.
自动锁-自动锁开启后，在指明期间内，在几分钟内无所作为。
While the fan is in operation, please do not lock the fan intentionally for a long period of time to prevent over heating which may cause permanent damage.
当风扇在正常运转时，请不要长时间故意地锁定风扇，那样会使风扇过热从而有可能导致风扇的永久性损坏。
While the fan is in operation, please do not lock the fan intentionally for a long period of time to prevent over heating which may cause permanent damage.
当风扇在正常运转时，请不要长时间故意地锁定风扇，那样会使风扇过热从而有可能导致风扇的永久性损坏。
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