胶状
发表于 2025-3-28 14:41:44
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有毒
发表于 2025-3-28 20:10:15
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Flounder
发表于 2025-3-29 02:03:30
Computer productivity initiative: Past, present, and future,ment a “learn by doing” approach; building a prototype to demonstrate concept and assess risks is very effective but can be time consuming; evaluation of a proposed implementation is difficult in the absence of a “real” customer; a better method of reality checks is needed; tight schedules are diffi
高兴一回
发表于 2025-3-29 04:38:59
Displaced Non-Keplerian Orbits for Sun and Inner Planet Observation wind dynamic pressure (E-sails). This analysis uses recent models to provide a mathematical description of the propulsive acceleration generated by both propulsion systems, and different scenarios involving non-Keplerian orbits are analyzed. Particular focus is given to Type II displaced orbits, no