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To transmit motion smoothly, the contacting surfaces of gear teeth must be carefully shaped to a specific profile.

为了平顺地传递运动，齿轮齿的接触面必须精加工成特殊齿廓。

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The reasonability and validity of the method was testified by the coincidence of the simulation and the theory analysis under the motion mode of trapezoidal velocity and S-velocity profile.

在T形和S -曲线速度轮廓运动模式下，模型的仿真结果与理论分析一致，验证了该方法的合理性和有效性。

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Following the iPhone are a number of high-profile BlackBerrys from Research in Motion, along with devices using Google Inc.

WSJ: Palm's Pre Sells Briskly at Launch

Were it not the time of year for high-profile action movie releases, you might have been led to believe that digital piracy of motion pictures was a new thing.

FORBES: Magazine Article