To realize the automatic control of mechanical-transmission system in automobiles, the transmission pattern and process of traditional mechanical-transmission system are analysed.

本文从汽车机械式变速系自动控制角度出发，对传统机械式变速系的换档规律、换档过程以及自动控制模式等进行分析。

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Objective To identify the source of influenza a (H1N1) infections, determine the transmission pattern among patients, and summarize the experience derived from the prevention and control work.

目的为明确甲型H1N 1流感病例的感染来源，探索病例间传播方式，总结防控工作的经验及教训。

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The other cases do not show the sort of transmission pattern that normally gives away a genetic disease yet there is a bigger chance than normal that someone will suffer from Alzheimer's if relatives on his mother's side have also suffered.

ECONOMIST: Trojan DNA

One striking observation is how different the pattern of transmission is in different countries.

ECONOMIST: AIDS

In the new study biostatistician Ira Longini at the Fred Hutchinson Cancer Research Center in Seattle devised a computer model to calculate the probability that such an outbreak pattern could occur without human transmission.

FORBES: Magazine Article