时间等
发表于 2025-3-26 23:00:51
8楼
Criteria
发表于 2025-3-27 05:05:49
8楼
DOLT
发表于 2025-3-27 08:45:42
8楼
地名表
发表于 2025-3-27 11:40:43
9楼
MAPLE
发表于 2025-3-27 14:42:50
9楼
GULLY
发表于 2025-3-27 20:38:35
9楼
Saline
发表于 2025-3-28 00:13:41
http://reply.papertrans.cn/35/3413/341262/341262_37.png
座右铭
发表于 2025-3-28 06:10:59
constant) on in?nitesimally small, kinematically admissible (virtual) displacements is zero. It is known that equating the virtual work performed for potential systems to zero is equivalent to the stationarity conditions for the total energy of the sy978-90-481-7619-9978-1-4020-6377-0Series ISSN 0925-0042 Series E-ISSN 2214-7764
chassis
发表于 2025-3-28 10:15:12
http://reply.papertrans.cn/35/3413/341262/341262_39.png
名字的误用
发表于 2025-3-28 13:59:55
David Simpsonequences and open problems. Results are illustrated by a variety of applications including coupled oscillators and rotating waves: these links to such disciplines as theoretical biology, chemistry, fluid dynamics, physics and their engineering counterparts make the book directly accessible to a wide