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51. | blind interception |
| 仪表拦截 |
|
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52. | high frequency instrument |
| 高频仪表 |
|
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53. | bridge instrumentation |
| 驾驶室仪表 |
|
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54. | well head gauge |
| 井口仪表 |
|
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55. | flush type meter |
| 嵌入式仪表 |
|
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56. | scientific instrument |
| 科学仪表 |
|
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57. | checking instrument |
| 校验仪表 |
|
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58. | pocket instrument |
| 袖珍仪表 |
|
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59. | hot wire instrument |
| 热线仪表 |
|
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60. | electrothermic instrument |
| 电热仪表 |
|
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