"Fog enveloped the house"
目的探讨三孔缝合打结法在腹腔镜阑尾切除术中的可行性及应用。
The vegetation roots play a very important role in reducing soil erosion by means of being embedded in, entangled in and enwrapped in soil.植物根系在土壤中穿插、缠绕和网络,与土壤形成了一种天然的复合材料,对防止水土流失具有重要作用。
The mineralogy and microstructure were also investigated by using scanning electron microscope. Results show that carbon nanotubes are enwrapped by CSH.用扫描电镜对碳纳米管水泥复合材料以及碳纤维改性水泥复合材料的微观结构进行了分析。