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51. | background of the invention |
| 发明的背景 |
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52. | first to invent principle |
| 先发明原则 |
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53. | The Invention of Printing |
| 印刷术的发明 |
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54. | application for the protection of an invention |
| 申请保护发明 |
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55. | perfect an invention |
| 完成一项发明 |
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56. | scope of invention |
| 发明的范围 |
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57. | the latest thing |
| 最新发明品 |
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58. | essence of an invention |
| 发明的实质 |
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59. | obvious invention |
| 显而易见的发明 |
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60. | Cross Border Innovation |
| 跨边界发明 |
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