1. Methods 34 cases who need to
intromit stomachic draft tube were randomly divided into two groups according to normal method and improved method.
方法对34例口腔颌面部肿瘤切除术后需插胃管的患儿按常规法和改进法随机分为两组。
2. The as each country government relaxation on international is control, open of celestial policy carry out, also the obstacle of
intromit aviation industry is abate.
国际上随着各国政府的放松管制、开放天空的政策的实施,也使进入航空业的障碍减弱。