共 50 条
- [1] VELOCITY MEASUREMENT OF FREE-FALL SPT HAMMER American Society of Civil Engineers, Journal of the Geotechnical Engineering Division, 1979, 105 (01): : 1 - 10
- [2] EVALUATION OF AN AUTOMATIC FREE FALL SPT HAMMER SYSTEM. Indian geotechnical journal, 1986, 16 (02): : 136 - 148
- [5] SUSPENSION VELOCITY OF THE COLORADO POTATO BEETLE IN FREE-FALL AMERICAN POTATO JOURNAL, 1993, 70 (04): : 309 - 316
- [7] SPT HAMMER ENERGY MEASUREMENT JOURNAL OF THE GEOTECHNICAL ENGINEERING DIVISION-ASCE, 1982, 108 (04): : 599 - 620
- [9] In situ granular charge measurement by free-fall videography REVIEW OF SCIENTIFIC INSTRUMENTS, 2013, 84 (02):