请看《中国日报》有关报道：The world-record US$19.1 billion public offer by Industrial and Commercial Bank of China was met with great enthusiasm by domestic and overseas investors1 yesterday.
The bank set its A-share price at between 2.6 yuan and 3.12 yuan 1.95 times and 2.23 times its 2006 book value, bankers involved in the sale said.
报道中的book value指的是（股票的）账面价值，又称股票净值或每股净资产，是每股股票所代表的实质资产的价值。市账率即股价与股票帐面值的比率，其相应的英文表达为price-to-book ratio，显然，市账率越低，股价愈实惠。
在商业纪录中，book value（帐面价值）指公司显示在资产负债表上的价值，即企业的净资产值，相等于总资产减无形资产（专利、商誉等）及负债。
看例句：Book value per share is equal to the net assets represented by one share of stock.（每股账面价值等于每股股票代表的净资产。）