特殊用法frequency doubling1.倍频ice doubling1.破冰加强板intracavity frequency doubling1.腔内倍频meiotic doubling1.减数分裂加倍seam doubling1.【采矿】煤层加倍变厚somatic doubling1.体细胞(染色体)加倍spontaneous doubling1.自发(染色体)加 倍successive doubling1.顺次加 倍voltage doubling1.倍压doubling of the track1.铺设第二线, 双线化