不过按照国际标准，这个数字并不是很大：比如，美国据称容纳了1200万未在册的劳工，按人头计算是英国的三倍。
The number is still small by international standards: America, for instance, is thought to harbour some 12m undocumented workers, more than three times as many as Britain has per head.
介绍了美国数字有线电视传输标准以及一种采用DSP技术进行软件信道解码的方法，给出了所用关键技术和实现算法。
American digital video transmission standard for cable Television was introduced and a software method was illuminated to implement channel decoding by DSP technology.
美国标准资讯交换码(ascii)是最普遍用来表示电脑内的文数字资料的编码。
American Standard code for Information Interchange (ASCII) is the code that is most commonly used to represent alpha-numeric data in a computer.
在这一个本文中，一个例子是工具钢的W1，被类型信只有指定而且如美国和英国所用的数字为标准化用工具工作钢。
In this text, an example is tool steel W1, designated only by the type letter and numeral as used in the USA and the UK for standardized tool steels.
在这一个本文中，一个例子是工具钢的W1，被类型信只有指定而且如美国和英国所用的数字为标准化用工具工作钢。
In this text, an example is tool steel W1, designated only by the type letter and numeral as used in the USA and the UK for standardized tool steels.
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