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31. The wedge is an important early mechanical invention.

32. Others include mechanical defects and driver fatigue.

33. Mechanical weathering is rapid in cold desert regions.

34. It's either a mechanical or electrical device.

35. The plane's departure was delayed by mechanical problems.

36. They can also create boring, frustrating mechanical jobs.

37. All the mechanical bits and bobs worked fine.

38. The tail-rotor gear box was hanging by mechanical tendons.

39. It was the mechanical accuracy of an automaton.

40. All trucks coming through are inspected for mechanical violations.

41. A wonderland of mechanical organs rich with exuberant carvings.

42. I think the world will always need mechanical engineers.

43. They're gravitating to a large noisy mechanical crudely-lit fairground.

44. Similar mechanical devices are planned for the space station.

45. The variety of careers for mechanical engineers is enormous.

46. A mechanical breakdown during the race would mean defeat.

47. Careful handling is necessary to reduce mechanical damage.

48. No mechanical devices or hormones are used.

49. This occurs as the result of toxins that form as mechanical energy is converted to electrical energy.

50. More recently, stories have circulated that mechanical or electrical faults in factories are due to gremlins taking over the working of machines.

51. The relative importance may change, as can be seen in the increasing importance of mechanical weathering in cold and dry climates.

52. Quantum mechanical states, however, differ in two important respects from those of classical physics.

53. Lei Feng is under a truck fixing a mechanical problem.

54. However, mechanical aids can do much to lessen the disability of impaired body structure.

55. The company is currently designing a new chassis to provide full mechanical functionality, expecting it to ship in June.

55. Sentencedict.com try its best to collect and create good sentences.

56. Unlike mechanical clocks, which are completely blind to their surroundings, a biological clock gets reset every day by the sun.

57. He deliberately used both brush and pen as boldly as possible to soften the mechanical nature of the process.

58. In the 1980s mechanical hearts were attached by wires and tubes to machinery outside the body.

59. But to engineers - particularly mechanical engineers - patent law is something to be aware of.

60. Or mechanical extractor ventilation capable of providing at least three air changes per hour and operating with 15-minute overrun after activation.