post and core material

• 桩核材料

post and core material的用法和样例：

例句

1. Neutron coincidence counting is widely used in the authentication and management of nuclear material.
   中子符合计数在核材料认证和管理中有着广泛的应用。
2. Earlier this year government inspectors smuggled enough radioactive material to make two dirty bombs across two different border crossings.
   今年早些时候，有政府检验人员通过两个边境站走私进了足以制造两颗脏弹的核材料。