等温锻造的半成品已经接近成品尺寸，余量很小。
Isothermal forging of semi-finished products are close to finished size, very small margin.
锻件的余量加放技术是锻造加工的关键技术，叶片锻件的余量加放技术与其它零件有着很大的差异。
The technology of designing the stock of blade forgings is the key in forge work. So there are many differences between turbine blade and other parts in this technology.
研究了新型TMC - 2复合材料的叶片小余量锻造工艺。
Little allowance forging process of a new TMC -2 composite blade is studied.
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