共 50 条
- [41] PARAMETRIC ELECTRIC-FIELD ECHOES IN CDS IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, 1975, SU22 (03): : 232 - 232
- [45] Spatial and temporal variation of species diversity ALLGEMEINE FORST UND JAGDZEITUNG, 2001, 172 (8-9): : 156 - 160
- [50] Interrelation of the temporal and spatial scales of disturbances in the lower ionosphere induced by the external electric field GEOMAGNETIZM I AERONOMIYA, 1999, 39 (02): : 121 - 125