共栖
发表于 2025-3-28 15:55:38
Hong Yangdescriptions of the stress intensity factors are obtained at the kinked-curved crack tip, where the cracked body is subjected to an arbitrary far field boundary condition. A kind of matched asymptotic expansion method is introduced in order to construct the solution, where the effects of the geometr
代替
发表于 2025-3-28 20:08:54
ck path stability and resulting cracking formation in brittl.This book is about the pattern formation and the evolution of crack propagation in engineering materials and structures, bridging mathematical analyses of cracks based on singular integral equations, to computational simulation of engineer
灾祸
发表于 2025-3-28 23:34:40
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Consensus
发表于 2025-3-29 04:24:21
General Technology of Cargo Ship,he space station needs to be supplemented with non-renewable resources such as constantly consumed propellant and nitrogen. In order to give full play to the advantage of manned on-orbit maintenance, it is necessary to transport spare equipment and replace faulty ones to prolong the on-orbit flight
glucagon
发表于 2025-3-29 09:08:05
Design Technology of Space Laboratory System,USA and the European Space Agency (ESA) were the first to develop a space laboratory in the 1970s and 1980s. China’s space laboratories, including Tiangong-1 target spacecraft and Tiangong-2 space laboratory, were launched in September 2011 and September 2016, respectively
Tidious
发表于 2025-3-29 14:12:29
Manned Reentry and Return Technology,here of the destination celestial body, passes through the atmosphere safely and uses the atmosphere to decelerate, and finally lands safely on the celestial body is called the process of entering the celestial body’s atmosphere, or simply the entry process. The entry process is one segment of reent
杂役
发表于 2025-3-29 18:36:39
Manned Landing and Recovery Technology,verall design technology, structure and mechanism technology, thermal protection technology, aerodynamic deceleration technology, landing buffer technology, electro-explosive device (EED) technology, radio technology, power control, supply and distribution technology and others. The spacecraft recov
自恋
发表于 2025-3-29 22:38:17
Technology of Orbital Propellant Refueling, more and more important. The technology of orbital propellant refueling is of great significance for prolonging the spacecraft life and reducing its cost. At present, most of the spacecraft around the world use the propulsion systems based on chemical propellants (such as liquid two-component prope
INCUR
发表于 2025-3-30 00:27:04
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addition
发表于 2025-3-30 05:41:23
Application Technology of Space Manipulator,ools according to a fixed program. It can replace people’s heavy duty to realize the mechanization and automation of production and can operate in harmful environment to protect human safety. Therefore, it is widely used in machinery manufacturing, metallurgy, electronics, light industry, atomic ene