摘要: Vickrey拍卖(the second-price sealed-bid Auction):也叫次高叫价拍卖,同样是第K高叫价拍卖中的一种,当K=2时即为此种方式[阅读全文:]
摘要: Vanadium (pronounced /vəˈneɪdiəm/) is the chemical element with the symbol[阅读全文:]
摘要:Vanadium(V) oxideVanadium(V) oxide (vanadia) is the chemical compound with the formula V2O5. Commonly[阅读全文:]
摘要:增值税(value added tax,VAT)是一种销售税,属累退税,是基于商品或服务的增值而征税的一种间接税,在澳大利亚、加拿大、新西兰、新加坡称为商品及服务税(Goods and Services[阅读全文:]