The floatation performance of jamesonite with diethyldithiocarbamate as collector is studied.研究了以乙硫氮为捕收剂时脆硫锑铅矿的浮选性质.Diethyl xanthate not only adsorbed chemically but also became dixanthogen on jamesonite surface.乙黄药在脆硫锑铅...
Anatomy. The perilobular region comprises the structures bordering the periphery of the secondary pulmonary lobule.小叶周围区包括接近二次肺小叶的结构.This paper deals with leaf anatomy of 33 species in eight subgenus of Rhododendron from...