A roll as compared to the current direction of flight.

相对于目前飞行方向的侧滚动作。

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The distribution of the detectors triggered allows the direction of the Cherenkov radiation, and therefore the flight direction of the muon, to be worked out.

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Although deliberate segregation is no longer an issue, demographic trends and white flight to rich suburbs keep pushing in the direction of a de facto segregation of schools.

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The cosmic ray particle physics detector was carried to the International Space Station on the final flight of the space shuttle Endeavour and installed under NASA direction.

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