One of Perl's advantages over straight c, of course, is that it does heap management on objects, so that when an object passes out of scope, it will be destroyed.

当然，Perl相比直接的c语言的优势之一是在于它确实可以在对象上进行堆积管理，这样当一个对象超出范围时，就会被销毁。

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Objective:To analyze and compare the applying scope and accuracy of the results of LDL-C obtained by direct testing method and indirect calculation methods.

目的：分析比较低密度脂蛋白胆固醇（LDL-C）直接测定与三种间接计算法的适用范围和准确性。

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