超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
光学活性金属卟啉
Optically active metalloporphyrin
活性金属法
Active filler metal process
活性金属指示电极
active metal indicated electrode
活性组元
surface-activating element
双金属活性中心
bimetallic active center
double metal active center
陶瓷-金属活性釺焊
Active brazing of ceramic to metal
中低放射性金属元素
mid-low radioactive metallic element
属性元性质
meta-property of attribute
非金属-金属转化
nonmetal-metal transition