noun 下载 🔗分享 伦琴, 侖琴 A unit of exposure to ionizing radiation Examples : "The technician measured the radiation exposure as 0.5 roentgen during the X-ray. " 在X光检查过程中,技术员测量到的辐射暴露量为0.5伦琴。 medicine physics energy science 与AI对话词汇游戏阅读练习