To improve reasonableness in development strategic research and project argumentation, a quantificational evaluation method was brought forward. Based on divisiory development stages and technology sorts, key technologies of hypersonic vehicle were collected and classified. The quantificational evaluation method was applied with aims of proposed evaluation criteria to evaluate technology key level. Sort order by key technology quantification shows result accord with general consideration, at the same time result also proves quantificational evaluation method has potential effect and worthiness.
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