nh4h2po4 meaning in English
磷酸二氢铵
Examples
- The results show that : the fillers of sio2 based investment consist of sio2 , al2o3 and mgo , and the binder is nh4h2po4 for sio2 based investment , the bulk density and the compression strength decrease , the apparent porosity and the thermal expansion increase , when the specimens are heated to 900 ; the fillers of al2o3 based investment consist of al2o3 and mgo , and the binder is nh4h2po4 ; for al2o3 based investment , the bulk density decreases and the apparent porosity increases when the specimens are heated to 900 ; the fillers of mgo based investment consist of mgo and al2o3 , and the binder is ca cement ; for mgo based investment , the compression strength decreases and the thermal expansion increases greatly when the specimens are heated to 900
结果表明：氧化硅系包埋料的骨料是氧化硅、氧化铝、氧化镁，结合剂为磷酸二氢铵，其900锻烧后显气孔率增加，体积密度下降，耐压强度降低，热膨胀增大；氧化铝系包埋料的骨料是氧化铝和氧化镁，结合剂为磷酸二氢铵，其900烧后显气孔率增加，体积密度下降，热膨胀变化不大；氧化镁系包埋料的骨料是氧化镁和氧化铝，结合剂是铝酸钙水泥，其900烧后耐压强度明显降低，热膨胀明显增大。