the problem of environment pollution or equipment damage caused by the overflow of the pulverous material or the high concentration gas-solid mixture is overcome.
解决了粉状物料或高浓度气固混合物溢流而造成环境污染或设备损坏的问题。
objective:to investigate the efficacy of treating serious pulverous intertrochanteric fracture of femur by dhs and tension band.
目的:观察dhs加张力带在肌骨粗隆间严重粉碎骨折中的治疗效果。
the effect of different fillers such as hollow glass microsphere, pulverous coal ash and foam polymer on water insertion loss of sound isolation rubber material were studied.