doubly fed双馈doublyadv.加倍地；双重地；二倍地doubly-linked circular list双重联结环状列表doubly fed induction generator双馈发电机Doubly resonant intra-cavity复合腔doubly differentiable function二阶可微函数Doubly uniparental inheritance双单亲遗传Doubly-fed induction machine双馈感应电机doubly-fed brushless machine无刷双馈电机doubly asymptotic approximation双非典型近似doubly-fed asynchronous motor双馈异步电机doubly-closed-shell isotope双闭合壳层同位素