复杂件只能采用多箱造型的方法，难度增加，铸件容易产生错位，增加清理和机加工的工作量。
Complex parts only can adopt the method of multi-box molding, difficulty is increased, casting is easy to cause dislocation, increase the workload of cleanup and machining.
复杂件只能采用多箱造型的方法，难度增加，铸件容易产生错位，增加清理和机加工的工作量。
Complex parts only can adopt the method of multi-box molding, difficulty is increased, casting is easy to cause dislocation, increase the workload of cleanup and machining.
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