Fragmentation and PDQ priority also have a huge effect on the speed of data retrieval and will help table scans.

分段和PD Q优先级也对于数据的检索速度有极大的影响，并有助于表扫描。

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The certainty of punishment has the clearest deterrent effect, which is problematic for speed enforcement because it relies on an uncertain police presence.

必行对制止具有最明显的效果，但要实施在超速这个问题上却是困难重重，因为检查超速需要恰逢警察在场。

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They found that speed had the greatest effect on the amount of time spent online andon frequency of visits for web applications.

他们发现速度起到的效果最大，网络停留时间总量和网络软件访问频率。

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The aim is to freeze the runners, but at the same time blur the background with a streaky effect to show speed.

BBC: Picture power: Running for gold

In addition to sustained speeds, the FCC analyzed consumer connections' latency and the effect of ISP speed boost tech on activities like VoIP, gaming, and video streaming.

ENGADGET: FCC measures US wireline advertised broadband speeds, fiber dominates cable and DSL

Dr Zewail's research involves, in effect, taking high-speed snapshots of chemical reactions.

ECONOMIST: The 1999 Nobel prizes