permanent reference meaning in English
①标准②校准器③标准源
Examples
- More permanent reference stations are being installed to provide wider and more precise coverage . the received satellite signal data are available to the public
测绘处现正设立更多的永久参考站，以扩大覆盖范围及提高精确程度。 - The contract for the first phase of the tcgpsa was awarded in early 2000 and includes setting up of six gps permanent reference stations in the north - western new territories
该系统第一期计划的合约已于年初批出。合约包括在新界西北部设立六个永久参考网站。