论文部分内容阅读
我国经济发展受到资源约束
【出 处】
：
山东冶金
【发表日期】
：
2004年1期
其他文献
对机械施工企业来说,工程机械技术状况的良好与否是企业正常生产的直接因素。现在的工程机械大多采用机电液一体化,液压系统的正常运行是其良好技术状况的一个主要标志。合格
Combined subfascial endoscopic perforator surgery and endovenous laser treatment without impact on t
Background Conventional high ligation and stripping of the great saphenous vein (GSV) has a good curative effect but is highly traumatic with a considerable rel
Associated factors with repeat coronary angioplasty during the drug eluting stent era: a high volume
Endovenous laser ablation of great saphenous vein with ultrasound-guided perivenous tumescence:early
Background Endovenous laser ablation (EVLA) is an improved method to treat varicose great saphenous veins (GSV)with a high satisfactory rate.This study aimed to