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问: 答: 这点差别可以让你出现意想不到的错误!如下: 第一种情况: >>> l = [[],[],[]]>>> l[[], [], []]>>> for i in range(3): l[i].append(i) >>> l [[0], [1], [2]] 第二种情况: >>> l = 3*[[] 阅读全文
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NIPT需要多大的数据量(reads number)? 调研 2014 Noninvasive prenatal diagnosis of common aneuploidies by semiconductor sequencing 报道 Approximately 65.5% (3.6 mill 阅读全文