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51. | spherical typewriter |
| 球形打印机 |
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52. | spherical radiation |
| 球辐射 |
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53. | spherical reflector |
| 球形反射器 |
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54. | spherical asymptote |
| 球面渐近线 |
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55. | spherical roller |
| 球面滚子 |
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56. | spherical tensor |
| 球张量 |
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57. | spherical segment |
| 球截形 |
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58. | spherical valve |
| 球形阀 |
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59. | spherical separator |
| 球形分离器 |
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60. | spherical bubble |
| 球形滴 |
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