22
63. One-third octave
64. Centre frequency
65. Progressive wave. Wave
66. Harmonic wave
67. Wavelength
68. Wave number
69. Wavefront
70. Wave velocity
71. Plane wave
72. Cylindric wave
73. Spherical wave
74. Longitudinal wave
75. Transverse wave
76. Standing wave
77. Node
78. Antinode
79. Mode of vibration
80. Deterministic vibration
81. Random vibration
82. Narrow-band random vibration
83. Broad-band random vibration
84. Exciting force (torque)
85. Force excitation
86. Kinematic excitation
87. Parametric excitation
88. Self-excitation
89. Soft self-excitation
90. Hard self-excitation
91. Damping
92. Linear damping
93. Restoring force (torque)
94. Restoring force (torque) characteristic
95. Stiffness
96. Lenear characteristic of restoring force (torque)
97. Hardening characteristic of restoring force (torque)
98. Softening characteristic of restoring force (torque)
99. Compliance
100. Dissipative force (torque)
101. Dissipative force (torque) characteristic
102. Linear viscous damping coefficient
103.
104.
105. Damping ratio
106. Q-factor
107. Logarithmic decrement
108. Energy absorption coefficient
109. Free vibration
110. Forced vibration
111. Parametric vibration
112. Self-excited vibration
113. Steady-state vibration
114. Transient vibration