轻[裂变]碎片 fission fragment: 分裂碎片; 裂变碎片fission fragment detector: 裂变碎片探测器fission fragment range: 裂变碎片射程fission fragment track: 裂变碎片径迹fission fragment track discriminator: 裂变碎片径迹甄别器下载手机词典可随时随地查词查翻译