双光子吸收 [电子] two-photon absorption

东方双光鱼 Diplophos orientalis

双光束 dual beam ; XD-B

双光子过程 biphotonic process ; two-photon process

双光束分光光度计 [分化] [光] double beam spectrophotometer

双光栅单色仪 U-1000 double-monochromator

双光镜片 Bifocal lenses ; Bifocing lenses

双光束光谱福射计 double beam spectrum radiator

双光子激光器 [激光] two-photon laser