用于检定流量计的标准体积管每三年要由计量检定部门检定一次。

Standard volume pipe used for flow meter's calibration shall be calibrated every three years by metering calibration department.

youdao

他了解摩尔定律，该定律认为集成电路上的晶体管数量每两年就会翻一番。

He knew about Moore's law, of course, which states that the number of transistors you can put on a microchip doubles about every two years.

youdao

这个法则的前提是，大约每18到24个月，能够放到集成电路上的晶体管数量就会翻一番。

Its premise is that the number of transistors that can be placed on an integrated circuit doubles roughly every 18-24 months.

youdao