In fact, one recent survey suggested that market penetration of such systems doubled from 2009, with more than half of fleets questioned indicating that they now use the technology.
事实上,最近的一个调查显示与2009年相比,这个信息技术的使用翻番,有一半以上的车队曾经对这个系统质疑过,但是他们现在开始使用这项技术。
But nearly 90% of the broadband penetration is an indisputable fact.
但几近90%的宽带普及率却是一个不争的事实。
Taken into account the fact that aggregates absorb pitch, required abilities to resist high temperature track and penetration could be gained by controlling interspace ratio (4%).
考虑集料对沥青的吸收,用混合料的设计空隙率(4%)控制混合料的高温抗车辙能力与渗水性。
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