贝他计数配制试样 preparation of sample: 样品的制备; 样品制备preparation sample: 备样sample preparation: 试样制备; 试样准备; 样品处理; 样品加工; 样品制备beta-gamma coincidence counting: β-γ符合计数gross beta counting: 总贝他计数下载手机词典可随时随地查词查翻译