自然频率 – phrases

Chinese	English
影响爆破行为的岩体特性描写的最少、包括非连续面的密度、强度、硬度、频率及自然属性、而且对爆破区域内这些参数的可变性了解的也最少	The minimum description of rock mass properties that influence blast performance includes the density, strength, stiffness and frequency and nature of discontinuities, together with an understanding of the variability of these parameters across the blasting area
自然频率也称自然振动频率,物体或体系在没有约束和外力激发下的振动频率，单位为 Hz,同natural vibration frequency	natural frequency