另两个为胸腺嘧啶和胞嘧啶, 即称为嘧啶的单环结构.The other two, thymine and cytosine, are single ring structures called pyrimidines.嘌呤为嘧啶取代或嘧啶为嘌呤所取代,叫做颠换.The substitution of a purine for a pyrimidine, or vice versa is a transversion.本文研究氟脲嘧啶(5—...
He laid himself down under the thwarts and waited, panting.躺在坐板下面, 气喘吁吁地等着开船.He sat exhausted and panting, his Brow Bedewed with perspiration.他精疲力竭,喘息地坐在那儿, 汗水濡湿了眉头.He forged ahead, panting and breathless.他气喘吁吁地向前奔跑。They...
Why mem to dea with the ikes of you?我为什么要和象你这样的人打交道?Replace the archive member name with mem.以mem替换存档成员名.Apphcation of MEM model in locking and tracking multiple random passive targets [ J ].MEM模型在多传感器多目标无源定位与跟踪中的应用 [ J ...