短语词组短语hot -cathode X-ray tube 热阴极X射线管;热阴极field -emission cold-cathode X-ray tube 冷阴极场致发射X射线管cathode -ray ŕ tube 阴极射线管industrial cathode -ray tube 工业用阴极射线管postacceleration cathode -ray tube 后加速阴极射线管 返回 cathode-ray tube