Moderator, a retarding layer of graphite

• 减速剂；一种石墨减速剂

Moderator, a retarding layer of graphite的用法和样例：

例句

1. The rod is surrounded with a neutron-slower.
   在棒的四周围着中子减速剂。
2. The uranium may be put into the reactor in the shape of rods, and the rods surrounded with a neutron-slower, or moderator.
   可以把铀做成棒状放在原子反应堆内，在铀棒的四周，围一层中子减速剂即节速剂。