High-pure gene fragments could be obtained from little amount of sample through PCR and T-vector.
利用PCR反应和T载体可以从少量的标本中，高效获得高纯度的目的基因。
Results After a certain amount of sample study process, the accuracy of tongue shape recognition was about 90%.
结果：通过一定量样本的学习训练，舌型特征的识别准确率接近90%。
There are many factors that influence the sampling error, such as, extent of mark variation, amount of sample unit and the choice of sampling method, etc.
影响抽样误差大小有很多因素，如标志变异程度，样本单位数量的多少，抽样方式方法的选择等。
The use of flurospectrometry to determine vitamin A in human serum is shown to be sensitive, accurate and needs a lesser amount of sample. It is suitable for nutritional surveys of large populations.
使用荧光分光法测定人体血清中维生素A灵敏、精确、取血量很少、适合大规模人群营养调查。
The use of flurospectrometry to determine vitamin A in human serum is shown to be sensitive, accurate and needs a lesser amount of sample. It is suitable for nutritional surveys of large populations.
使用荧光分光法测定人体血清中维生素A灵敏、精确、取血量很少、适合大规模人群营养调查。
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