我负有确保这些包裹得到妥善保管的重大责任。I had a huge responsibility to ensure these packets remained in safe hands.你没权挥霍委托你保管的钱.You have no right to play ducks and drakes with money that has been entrusted to you.它们列于一卷严格保管的缩微胶卷上.They are ...
电子显微学已经革新了对晶体不完整性的研究.Electron microscopy has revolutionized the study of crystal imperfections.粗的晶体不完整性,如孪生体可用肉眼看出.Gross crystalline imperfections like twinning are apparent to the unaided eye.断裂力学虽不是评定结构完整性的唯一标准, 但它起着中心...