Distilleries began to appear in Europe in the middle of the seventeenth century.欧洲最早的烧酒作坊出现于十七世纪中叶.A recirculated cooling water system with open - type cooling - tower is commonly used in alcohol distilleries.结合浮法玻璃生产特点,...
常常是用离心法分段收集沉淀的.Precipitates are usually collected by centrifugation at intervals.它可以用离心法分离.This can be separated by centrifugation.结论: 密度梯度离心法分离获得的人胚胎骨髓间充质干细胞纯度高.Conclusion: High purity of MSC can be obtained by density ...
过去片子是用石蜡固定到金属板上.Historically, wafers were waxed onto a metal plate.石蜡具有溶解油脂的特性.Paraffin has the property of dissolving grease.石蜡并不是良好的钝感剂.Paraffin , however, is not a good phlegmatizing agent....