open die的用法和樣例：
例句
- The dynamic stress concentration problems at the swallowtail on a hammer forging die are investigated by using the dynamic photoelastie method.
用動態光彈性法研究了錘鍛模燕尾的動態應力集中問題。 - It has elaborated the advantages replacing open -die forging with flashless die forging technology.
闡述了用閉式模鍛工藝代替開式模鍛的優點。
