对流也起着由于空气层相对薄小的作用和纸板上隔热层的存在。该纸板的绝缘性能发挥主要作用，因为它们有助于减少整个领空的温度梯度。通过研究，在重力的比萨饼冷却航天飞机自由的环境，我们可以更准确地确定对流流动的重要性。
—from The Thermodynamics of Pizza (热力学的比萨), a book by Harold J. Morowitz
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| 52. | Jason (jason951029) | 71.93 | 23% | 2014-02-18 |
| 53. | 微信扫码 (xiaov) | 71.91 | 97% | 2017-11-08 |
| 54. | ASSHOLE (boogerguy) | 71.56 | 88% | 2017-08-01 |
| 55. | wang (changelive) | 68.60 | 82% | 2011-08-19 |
| 56. | Alyson (alyc) | 68.52 | — | 2010-10-04 |
| 57. | dokger96 (dokger1996) | 67.72 | 86% | 2017-12-10 |
| 58. | 不醉不会 (kk668779) | 66.94 | 91% | 2017-11-08 |
| 59. | Kyle (kylebing) | 66.57 | 31% | 2015-05-08 |
| 60. | Barthilas (barthilas_gangstas) | 65.96 | 44% | 2012-09-28 |
| 61. | happily (sudala) | 65.01 | 90% | 2011-11-12 |
| 62. | dokger002 (allen002) | 64.71 | 86% | 2018-02-04 |
| 63. | 无 (isscer) | 63.18 | 84% | 2017-12-06 |
| 64. | Ge (nkwbtb) | 62.48 | 23% | 2013-11-30 |
| 65. | YoloswagCashMoney (yolo_s_wag) | 60.80 | 86% | 2018-08-08 |
| 66. | yusn (kdplus) | 59.94 | 19% | 2015-09-26 |
| 67. | SQ (0_waterstrong) | 57.21 | 27% | 2016-11-02 |
| 68. | minghua (colin97) | 55.52 | 90% | 2013-11-30 |
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| 70. | chenuzzi (chenuzzi) | 34.94 | 17% | 2017-02-28 |
| Universe | Races | Average WPM | First Race |
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| Simplified Chinese | 193 | 98.62 | June 2, 2010 |