超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
块状燃料元件
block-type fuel element
block-shaped fuel element
block fuel element
块状燃料元件高温气冷堆
block-type element fuelled HTR
组件燃料元件交换
assembly fuel element exchange
缓发中子破损燃料元件监测器
delayed neutron failed element monitor
燃料组件中燃料棒排列
array of fuel rods in the fuel assembly
多区状螺旋肋片燃料元件
polyzonal spiral fuel element