bonded flux英 [ˈbɒndɪd flʌks]美 [ˈbɑːndɪd flʌks]陶质焊剂;粘结焊剂化学双语例句Research on MgO-Al_2O_3-CaF_2 System Bonded Flux and its Alloy AdditionMgO-Al2O3-CaF2粘结焊剂及其合金化研究