分类：教育/科学-外语学习
问题：这段话帮忙翻译一下，谢谢Typicalmoldtolerance 
Typical mold tolerances are 0.0005-in./ft flatness, 0.001-in. total indior reading (TIR) for surfaces, and 0.0001-in. diameters. The finished part dimensions often exactly match the mold, but not consistently enough to say every casting will be to tolerance. For routine produTypical mold tolerances are 0.0005-in./ft flatness, 0.001-in. total indior reading (TIR) for surfaces, and 0.0001-in. diameters. The finished part dimensions often exactly match the mold, but not consistently enough to say every casting will be to tolerance. For routine production, assume the finished part tolerances will be one-half of the mold tolerances. CTT castings can, therefore, be cast to 0.001-in./ft flatness, 0.002-in. TIR surfaces, and 0.0002-in. diameters. Closer tolerances are possible, but at some point, the cost of the tooling exceeds the value.
回答：典型的模具的公差是：平整度为0.0005-英寸/英尺，表面总读数（TIR）为0.001-英寸，直径为0.0001-英寸。完成后的铸件尺寸俱与模具完全符合，但不是说每一个铸件是具足够的容错度。于常规的生产过程中，完成的铸件的公差容错度将是模具公差容错度的一半。CTT铸件能铸造出0.001-英寸/英尺平整度，0.002-英寸的表面总读数，和0.0002-英寸的直径。虽然可造成更小的公差，但在某程度上，模具成本的超过该值。

（专业用术语可能稍有不符，请自行斟酌）