| 21. | Propeller aircraft use one or more propellers ( airscrews ) to create thrust in a forward direction.
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| 22. | As the road was built in the forward direction, it was necessary to build 278 artificial structures.
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| 23. | After removing the barrel, the bolt and return spring are removed in a forward direction, completely dismantling the gun.
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| 24. | We made some strides in the last few weeks, but we have to keep moving in a forward direction.
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| 25. | The radiation is thus strongly collimated in the forward direction and can be assumed to be parallel for lithographic purposes.
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| 26. | Its forward direction to the west-northwest was due to an influence by a deep-layered ridge of high pressure over Mexico.
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| 27. | On the quantum level, we picture this as incident photons all traveling in the forward direction and being scattered isotropically.
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| 28. | If " g " approaches a value of 1 this indicates that the scattering is primarily in the forward direction.
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| 29. | This then adds to a total of 90?when the light travels in the forward direction and then the negative direction.
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| 30. | Sailing into the wind is possible when the sail is angled in a slightly more forward direction than the sail force.
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