As soon as little stiffness is noticed it is a good idea to begin.
当有任何轻微的僵硬就表示是时候开始练习了。
Many metals have high strength, high stiffness, and have good ductility.
许多金属具有高强度、高刚性以及良好的延展性。
Many metals have high strength, high stiffness, and have good ductility.
许多金属具有高强度、高硬度以及良好的延展性。
Many metals have high strength, high stiffness, and have good ductility.
许多金属具有高强度、高硬度以及良好的延展性。
应用推荐