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| 81. | sign of ascites |
| 腹水征 |
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| 82. | PROSIG (Procedure Sign) |
| 电台业务信号 |
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| 83. | a traffic sign |
| 交通标志 |
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| 84. | sign of infinity |
| 无穷号 |
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| 85. | neon sign installation |
| 霓虹招牌装置 |
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| 86. | sign magnitude arithmetic |
| 符号数值运算 |
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| 87. | No Stopping [sign] |
| 禁止暂停 |
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| 88. | sign of correlation |
| 相关的标志 |
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| 89. | sign changing amplifier |
| 符号变换放大器 |
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| 90. | sign of rotation |
| 转动方向符号 |
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