昨天的朝霞很绚烂。There was a spectacular sunrise yesterday.火红的朝霞映照在她的脸上.The blood - red light of down flared on her face.朝霞 映在湖面上.The glory of the dawn [ morning ] is mirrored on [ in ] the lake....
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 ...
Igloos are usually dome - shapedand are made of large slabs cut from compacted snow.雪屋通常都是圆顶结构,由坚实的冰雪割成大块的冰砖搭建而成.corpses laid out on cold mortuary slabs放在冰冷的停尸桌上的尸体Slabs of rock had slipped sideways in the remote past, a...
沙砾覆于铁质土层与砂砾层之上.Gravelly - sand over an iron - pan and gravel layer.小石头、砂砾层也可用来做隔绝层,以保持水分,降低土壤的温度.Pebbles and gravel also insulate the soil to keep surface temperatures low and preserve water.古河谷的边缘地带,往往缺失底部的河床相砂砾层.The ed...