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樓主: otitis-externa
31#
發(fā)表于 2025-3-26 21:09:18 | 只看該作者
Granular Dynamic Shearing and Its Differential Mechanical Model,granules move, but . tan. + . can obstruct the granular movement. Once the ultimate equilibrium is disturbed, the granular medium will be unstable, and the destruction of stability will make the granular medium begin to yield and flow.
32#
發(fā)表于 2025-3-27 02:23:40 | 只看該作者
33#
發(fā)表于 2025-3-27 07:06:14 | 只看該作者
34#
發(fā)表于 2025-3-27 12:16:10 | 只看該作者
Vibrating Ore-drawing Technology,nted to solve the apparent contradiction between the high efficiency of ore-breaking and the low efficiency of gravity ore-drawing. The invention of the vibrating ore-drawing technique brought important revolution to the development of underground mining technique, and consequently it became a focus in mining field.
35#
發(fā)表于 2025-3-27 14:38:43 | 只看該作者
Erkennungstheoretische Hauptrichtungen seismism, rock-burst, wind’s vibration, wave, mechanical vibration, blasting, etc. In engineering practices scientists and engineers are deeply concerned with two issues, one is the prevention of vibrating hazards and the other is the use of vibrating energy.
36#
發(fā)表于 2025-3-27 21:04:00 | 只看該作者
37#
發(fā)表于 2025-3-27 22:38:20 | 只看該作者
Introduction, seismism, rock-burst, wind’s vibration, wave, mechanical vibration, blasting, etc. In engineering practices scientists and engineers are deeply concerned with two issues, one is the prevention of vibrating hazards and the other is the use of vibrating energy.
38#
發(fā)表于 2025-3-28 02:42:33 | 只看該作者
39#
發(fā)表于 2025-3-28 07:16:09 | 只看該作者
2510-2281 m aber dieses Konzept aufrechtzuerhalten, müssen solche Entwicklungen genauer betrachtet werden, um Folgen aufzuzeigen und/oder Auswege abzuleiten.?978-3-658-20497-6978-3-658-20498-3Series ISSN 2510-2281 Series E-ISSN 2510-229X
40#
發(fā)表于 2025-3-28 13:43:26 | 只看該作者
Robert D. Richtmyerf Cambodia, where such emergent educational norms have been uniquely interpreted. By analyzing recent education policies and strategies, and the results of two separate surveys (a Student Questionnaire and Delphi Survey), this article?addresses the following research questions:?(1) In which historic
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