涂钍灯丝
thoriated filament
涂钍钨丝极
thoriated emitter; thoriated tungsten filament
涂钍阴极
thoriated cathode
钍
thorium
Th; thorium
钍D
D thorium
钍TH
thorium
钍X
X thorium
钍后元素
transthorium element
钍射气
thoron
thoron
thorium emanation; thoron
钍试剂
thorin
钍铈混合造影剂
actinophor
钍衰变系
thorium decay series
钍系元素
thorides
钍照片
thoriagram
碎矿机
crazing mill
碎矿石
broken ore
碎锡矿机
crazing mill
钛磁铁矿
titanic magnetite
钛铁矿
ilmenite; iserite; mohsite; titanic iron ore
钽锰矿
manganotantalite