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| 71. | grinding angle |
| 研磨角 |
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| 72. | flat position welding of fillet weld |
| 角焊缝平焊;船形角焊 |
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| 73. | hour angle difference |
| 子午圈角差;时角差 |
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| 74. | Screen angle |
| 网角 |
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| 75. | pressure angle |
| 压力角 |
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| 76. | Seaming a Corner |
| 缝角 |
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| 77. | Foreign language corner |
| 外语角 |
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| 78. | falloff angle |
| 收缩角 |
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| 79. | Corner reflector |
| 角反射器 |
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| 80. | Interference angle |
| 干扰角 |
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