Smoke rose from a crude earthen forge, wom?en took turns at a goatskin bellows while men and boys pounded scrap metal on small anvils, shaping it into cooking spoons, axheads, and other simple wares.
The crude phytosterols dissolved in solvent and reacted with metal salts to get the complex.
将粗制甾醇溶于溶剂中与金属盐溶液形成络合物。
3
The metal deposit rule was depended on the patterns of the metals in crude oil and the property of the catalyst as well as the diffusion and decomposition rates of metal compounds in the catalyst.