在铸钢件冒口设计中，模数法是一个广泛应用的计算方法，三次方程解析法是模数法中较为严密的计算方法。
In riser design of steel casting, modulus method is the most widely used method, and the cubic equation method is a most close method in modulus method.
在铸钢件冒口设计中，模数法是一个广泛应用的计算方法，三次方程解析法是模数法中较为严密的计算方法。
In riser design of steel casting, modulus method is the most widely used method, and the cubic equation method is a most close method in modulus method.
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