探讨了以氨水作为络合剂时产物的形貌特征，扫描电子显微镜（SEM）显示此方法制备产物颗粒均匀，粒径大约5！m，振实密度为2。
SEM show that the samples with NH4OH as a chelating agent are uniform, its particles are about 5 m, and tap-density is 2.
通过对稻壳粉进行筛分，测量了不同粒径稻壳粉的松散堆积密度和振实堆积密度。
By sieving the rice husk particles (RHPs), the paper presents the loose and the tap bulk density of different sizes of rice husk.
通过对稻壳粉进行筛分，测量了不同粒径稻壳粉的松散堆积密度和振实堆积密度。
By sieving the rice husk particles (RHPs), the paper presents the loose and the tap bulk density of different sizes of rice husk.
应用推荐