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81. | compressed air ram |
| 压缩空气冲压机 |
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82. | external-bruning ram |
| 外燃冲压发动机 |
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83. | line addressable ram |
| 行访问随机存储器 |
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84. | double ram press |
| 双活塞压机 |
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85. | inverted ram press |
| 反压式压力机 |
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86. | blind-shear ram |
| 全封剪断闸板 |
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87. | A hydraulic ram. |
| 水压抽水机 |
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88. | hydraulic ram pump |
| 水锤泵 |
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89. | hydraulic ram cylinder |
| 液压压头伸缩筒 |
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90. | charge coupled ram |
| 电荷耦合随机存取存储器 |
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