原始语种摘要： 
Einstein stated two dictums, so that more experimental facts can replace the previously adopted hypotheses and General Relativity (GR) can evolve to “grand aim” or perfection. In the absence of appropriate experimental facts during preCEREPAC ( C enturylong E xperience of R elativityrelated E xperiments on P hysics, A stronomy and C elestialmechanics) era, Einstein found no “escape” from the consequence of nonEuclidean geometry, while keeping all frames permissible based on contemporary knowledge. Bergmann also stated in 1968 that the “principle of general covariance” has brought about serious complication in GR. During CEREPAC, relativists and mathematicalastronomers invariably identified the appropriate “nature’s preferredframe,” which was later found essential for operation of... conservation laws. Based on CEREPAC, replacing the experimentally unverifiable hypotheses with experimentally proven principles, and improving upon the GRastronomers model (developed by JPL, USA, as an evolvedversion of GRconventional model) in two successive stages, GR was remodeled to what became evident as Evolved GR (EGR), after it enabled the elimination of all earlieradopted adhoc methods or approaches, and of the problems, paradoxes and anomalies, associated with the applications of GR, during CEREPAC, and after it unraveled the “Generalrelativistic nature of speedoflight (c)” which links the variable c _{r} with F _{r,} the local Gravitational RedShift Factor (as stated by Einstein between 1911–1921). As a consequence of the spaceage developments in numerical simulation and in the availability of precision observational data, it got proven that nature itself operates the conservation laws of energy, and of linear and angular momentums (both magnitudes and directions), with respect to the appropriate “nature’s preferred frame”; this provided sufficient reason for giving up the “relativity of all frames,” bringing back Euclidean geometry in EGR. Euclidean space in EGR enabled development of a Prototype of future Ephemerides, leading to five ordersofmagnitude improvement in accuracy of computation of precession of celestial orbits, using three independent methods; this methodology of Prototype Ephemeris and “threemethodsmatch” can also be applied while remaining exclusively within the precincts of GR, by using one alternative mode of running the EGR program for planetary and Lunar orbits, by opting for GRTOPT=Y; this mode utilizes exclusively the GR equations instead of EGR equations; in fact, this mode is the GRastronomers ( modified ) model that was really an intermediate stage of evolution (as mentioned above) between the GRastronomers model and the EGR model. This model incorporates: (1) All good (and, experimentally proven ) features from the three generations of GR models (Einstein’s original, Bergmann’s and MisnerThorneWheeler or MTW), and (2) The “Natureadopted” real orbital model (as proven from comparison of the computed precession values at Microarcsecond { μas } level using the “threemethodsmatch”) for its Methodology for Conservation of Linear and Orbital Angular Momentums, in a polar coordinate system (r, θ, ϕ). This model computes: (1) Precession of celestial orbits at nearly the same accuracy as that done using the EGR model, and (2) About three digit more accurate ( than reported by Folkner in 2014, from fitting lunar laser ranging data with an updated lunar gravity field from the GRAIL mission, etc.) orbits of inner planets and the Moon.
