同根派生 press mark相關(guān)詞英漢例句Crack nucleation and propagation in wear-resistant bainite ductile cast iron were investigated by press trace method and SEM.采用壓痕法及掃描電鏡觀察，研究了抗磨貝氏體球鐵中裂紋的形核與擴(kuò)展。press mark更多例句