例句與造句

1. In this paper , the vsi is produced by powder metallurgy . various alloy elements added , porosity and microstructure of materials is considered to affact the vsi ' s property ; matching between the working and none - working layer of vsi is discussed ; and the cost reduction of two - layer vsi is analysed as well
   研究了各種合金元素的添加、孔隙率和顯微組織對閥座圈工作性能的影響；討論了雙層閥座圈工作層與非工作層之間的匹配；分析了雙層閥座圈在成本上的優(yōu)勢。
2. It's difficult to find microstructure of material in a sentence. 用microstructure of material造句挺難的