双语例句
- A poignant memory.
一段悲伤的记忆。
权威例句
精细化学品的催化合成:水解、氧化和还原The shadow education systemHigh-efficiency CW thulium-sensitised holmium-doped fluoride fibre laser operating at 2.04 μmBlue upconversion fluorozirconate fibre laserRoom temperature CW tunable green upconversion holmium fibre laserTunable CW lasing around 0.82, 1.48, 1.88 and 2.35 μm in thulium-doped fluorozirconate fibreYtterbium-doped fluoride fibre laser operating at 1.02 mu mAmplification and lasing at 1.3 mu m in praseodymium-doped fluorozirconate fibresTunable CW lasing around 610, 635, 695, 715, 885 and 910 nm in praseodymium-doped fluorozirconate fibreRed upconversion Yb-sensitized Pr fluoride fibre laser pumped in 0.8 micron region