big forge piece的用法和样例：
- The structure of the temperature control system of the gas fired furnace for heating of the big aeronautic forge piece is studied.
- Comrade Qin Tao is born in military family, be taught as a child by good family. 1975 enrollment, in army this big forge takes exercise grow, join a Chinese Communist gloriously.
- Place forge piece in the center of the anvil when hammering. Forge pieces and anvil must be set flatly and properly to avoid flying out to hurt people.
- The paper put forward the principle of group technology for impeller forge piece of centrifugal blower.Die block forging technology for hydropress can be used.
- Forged piece precision and load condition of housing are affected directly by holding precision of moving beam of water press.