逃课成本取决于课程的性质特点、考核方式和制度约束的软硬程度。
The cost of playing truant depends on the characteristic nature of courses, examining way and system-restriction degree.
然后计算绒、毛渗出的数量，作为考核材料防钻绒性质等级的依据，报告中的等级分为1-5级。
The amount of leakage is counted and downproofness on a scale of 1-5 is reported.
然后计算绒、毛渗出的数量，作为考核材料防钻绒性质等级的依据，报告中的等级分为1-5级。
The amount of leakage is counted and downproofness on a scale of 1-5 is reported.
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