head-free casting

例句：

1. 1.The head-free casting process is crucial for the success of the project.
   无头铸造过程对于项目的成功至关重要。
2. 2.The engineers used a head-free casting machine to produce the parts.
   工程师们使用一台无头铸造机来生产这些部件。
3. 3.The head-free casting technique has been widely adopted in the industry.
   无头铸造技术已被广泛应用于该行业。