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| 81. | square sleeker |
| 方形镘刀 |
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| 82. | square criterion |
| χ平方标准 χ |
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| 83. | square deviation |
| 平方偏差 |
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| 84. | logical square |
| 逻辑方阵 |
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| 85. | square reflector |
| 矩形反射器 |
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| 86. | engineering square |
| 金工角尺 |
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| 87. | square repeater |
| 方形孔型用围盘 |
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| 88. | universal square |
| 万用角尺 |
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| 89. | Trafalgar Square |
| 特拉法尔加广场 |
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| 90. | Steenrod square |
| 斯丁洛特平方 |
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