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81. | gas flow indicator |
| 气体流量计 |
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82. | displacement meter |
| 位移流量计 |
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83. | hydrogen flowmeter |
| 氢气流量计 |
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84. | high sensitivity flowmeter |
| 高灵敏度流量计 |
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85. | magnetoelectric flowmeter |
| 磁电流量计 |
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86. | fuel flow meter |
| 燃料流量计 |
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87. | counting flowmeter |
| 计数流量计 |
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88. | ultrasonic flowmeter |
| 超声流量计 |
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89. | fluid flowmeter |
| 液体流量计 |
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90. | oxygen flowmeter |
| 氧气流量计 |
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