共 50 条
- [21] SOME INSTRUMENTAL VARIATIONS ARISING IN ROUTINE AIR-POLLUTION MEASUREMENTS INTERNATIONAL JOURNAL OF AIR AND WATER POLLUTION, 1962, 6 (03): : 201 - 203
- [22] Simulation and Calculation of Undercutting Effect of the Toneholes of Woodwind Instruments on the Shift of Eigenfrequencies of the Air Duct Acoustical Physics, 2023, 69 : 548 - 558