When DB2 performs an index or table scan, DB2 will block on a row lock when it comes across an uncommitted row which another transaction has exclusively (X) locked.

DB2 在执行索引或表扫描时，如果遇到一个被另一个事务独占 (X) 锁定的未提交行，那么 DB2 将阻塞在行锁上。

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Using technology developed at Brown University, researchers scan birds' bones and combine that with three-dimensional X-rays taken in flight.

利用布朗大学发明的技术，研究人员扫描了鸟儿的骨骼，同时还对鸟儿飞行时进行了三维X光扫描。

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That’s because the technology being tested is an X-ray machine that makes a full body scan of passengers to see if they are carrying concealed weapons or explosives.

这是因为被实验的技术是一种X光机，对乘客进行全身扫描来查看他们是否携带隐藏武器或炸药。

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A less invasive procedure known as a virtual colonscopy is done with a CT scan that passes x-rays through a patient's abdomen.

VOA: standard.2010.04.07

By the time Mellinger arrived at Landstuhl, the doctors already had a thick file with his medical records, including x-rays and a CT scan.

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X-rays and a CT scan were negative.

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This new system, as with a traditional CAT scan, uses X-rays shot from multiple angles, and assembled into one three-dimensional image by a computer.

FORBES: Magazine Article