退化的英語(yǔ)翻譯：

degenerate; retrogress; degeneration; degradation; deterioration; obsolescence
retrogression
【醫(yī)】 catagenesis; catapiasia; cataplasis; Deg.; degeneracy; degenerate
degeneratio; degeneration; degenerescence; degradation; devolution
disvolution; involute; involution; regress; regression; retrogression
revisionary metamorphosis

支鏈反應(yīng)的英語(yǔ)翻譯：

【化】 branched chain reaction; branching chain reaction