nium
美
英 
例句
The optimum design is introduced for the monoammo-nium phosphate in powder shape produced by slurry method with the biggest scale in China.
介绍国内最大规模的料浆法粉状磷酸一铵装置的优化设计。
Kinetic spectrophotometric determination of trace ruthe-nium with thoron
钍试剂催化动力学光度法测定痕量钌