To the Editor: A 50?year?old man presented with recurrent episodes of bullae, erosions, and crust on sun?exposed areas for 1 year. Lesions healed with scarring
To the Editor: Elastosis perforans serpiginosa (EPS) is part of different kinds of perforating diseases that are dependent on factors such as idiopathic, reacti
【摘要】自1990年上证交易所成立至今,我国证券市场发展仅20几年,在此期间,万科、天目药业曾经发行过优先股,但是由于我国与优先股相关法律不完善,这些优先股都退出了。结合金融机构特性以及美国金融业发行优先股操作方式,我国可以考虑先对金融机构开放优先股融资。以上市商业银行为例,发行优先股主要有2种方式,一种在原普通股基础上增量发行,另外一种将适量原普通股转为优先股。本文以最近推出优先股试行方案的几家
阐述了机组滑压运行方式的原理和优点 ,给出了自动滑压控制的设计思想和实现方法
The principle and advantages of unit slip pressure operation mode are expounded, and
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥