例句與造句

1. Abstract : in this paper the gas gap in the expendable pattern casting process was studied and the relation between the gas gap and collapse defect is discussed
   文摘:對(duì)消失模鑄造鑄鐵件流動(dòng)前沿的氣隙進(jìn)行了研究，探討了氣隙與坍塌缺陷的相互關(guān)系。
2. It's difficult to find expendable pattern casting in a sentence. 用expendable pattern casting造句挺難的