This switching of classes at run time is a common feature of object-oriented programming, known as polymorphism.
这种在运行时的类切换是面向对象编程的一个常见特性，称为多态性。
A new effective single nucleotide polymorphism (SNP) typing method was developed by using real-time polymerase chain reaction (PCR).
建立一种利用荧光定量pcr扩增反应进行单核苷酸多态性(snp)快速测定的方法。
At the same time, we can infer that serum protein polymorphism is a practical method used for studying the degree of heredity and variance.
同时表明，研究群体间遗传及遗传变异程度，血清蛋白多态性是一种切实可行的方法。
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