Fourth , the theoretical model of optimum technological growth rate under discrete change is erected . technology is a unique production factor because technological growth experiences a mutation when technological increase accumulates to a certain extent . under this condition , the point - mutation model in tom ’ s mutation theory is applied to explain the phenomenon of technological 將技術(shù)作為不同于勞動(dòng)和資本的特殊生產(chǎn)要素進(jìn)行考察,即當(dāng)技術(shù)量的積累達(dá)到一定程度時(shí),技術(shù)增長(zhǎng)會(huì)產(chǎn)生突變,在此條件下,運(yùn)用湯姆突變理論中的尖點(diǎn)突變模型,解釋了技術(shù)突變現(xiàn)象,討論了勞動(dòng)和資本的不同組合變化下,在臨界點(diǎn)附近技術(shù)突然躍升或下降的突變性質(zhì);構(gòu)建了技術(shù)突變完成后的技術(shù)增長(zhǎng)率優(yōu)化理論模型。