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| 71. | water cooling of roll |
| 磨辊水冷 |
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| 72. | To hone(two mating parts)against each other until closely fitted. |
| 磨平某物（使能配起来）将（两对应部分）相互摩擦直到其紧密地合并在一起 |
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| 73. | I think the buttons, they require some polish. |
| 我想这些扣子需要磨后磨后。 |
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| 74. | vibratory milling |
| 振动球磨 |
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| 75. | antifriction thrust bearing |
| 减磨推力轴承|减磨止推轴承 |
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| 76. | wear away; wear down |
| 磨坏;侵蚀 |
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| 77. | ball or rod mill for solid mineral materials |
| 球磨或棒磨机,用于固体矿物 |
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| 78. | trapezoid abrasive tile |
| 梯形磨瓦 |
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| 79. | A device or mechanism that grinds grain. |
| 磨臼，磨粉机磨谷物的装置或机械 |
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| 80. | plain glued & rubBed joint |
| 磨胶接榫 |
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