The catalyst with big size and low bulk density is prone to expand.
2
催化剂还具有强度高、堆密度小、自再生能力强等特点。
The catalyst also had high side pressure, low bulk density and good capacity of self - generation.
3
湿膨胀系数用于预报谷物堆密度和研究谷粒应力裂纹产生原因等研究。
The hydroscopic expansion coefficient of grains is an important physical parameter for prediction of bulk densities and study of internal stresses of grain kernel during adsorption and desorption.