常見例句雙語例句The crack growth process is a continuous process of alternating crack-tip stretching and ductile crack cracking.裂紋的增長過程是一個裂紋尖端延伸與延性裂紋啟裂持續(xù)地交替出現(xiàn)的過程。For precraked specimen , the elevation of normal stress ahead of the ductile crack is related to the stress intensification and the strain hardening.對于裂紋試樣，裂尖前端正應(yīng)力升高是由于應(yīng)力強(qiáng)化和應(yīng)變強(qiáng)化這兩個因素決定的。Fracture test of the BT20 indicates that brittle unstable fracture occurs after ductile crack initiation and slow propagation for all the compact tension (CT) specimens.BT20 鈦合金斷裂試驗表明，CT 試樣均在裂紋延性啟裂并緩慢擴(kuò)展后，發(fā)生脆性失穩(wěn)斷裂。 返回 ductile crack