| http://www.w3.org/ns/prov#value | - MSFCevaluated approximately 30 materials, including silicones, epoxies,and polyesters, and also discovered that subjecting materials to low-pressure molecular distillation68 improved their resistance to the spaceenvironment.69Batteries JPL initiated a program in 1962 to develop robust batteries capableof withstanding three heat sterilization cycles of 145??C for 36 hourseach and still displaying g
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