helical aerator是什么意思

用法例句

Fractionation of softwood bleached chemithermomechanical pulp (BCTMP) fiber was carried out with a air-sparged hydrocyclone.

采用充气水力旋流器对针叶木漂白化学热磨木浆(BCTMP)纤维进行了筛分的实验研究。