Official PPI data based on the current reference base are not available on previous index reference base periods.

基于当前参考基准的官方生产者物价指数数据在以前的指数参考基准期是不可用的。

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A recent study put out by the United States based Population Reference Bureau indicates that fewer couples are choosing to get married.

最近根据人口资料局资料美国刊登出的一项研究表明选择结婚的情侣较少。

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Previous reference charts were based largely on the growth of infants fed formula milk.

先前的参考图表大部分以喂养婴儿配方奶粉的婴儿生长为基础。

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Then through the use of GPS-based reference clocks at each tower (for both time and frequency), the signals are synced so each can emit a perfect copy of both signal and symbol data.

ENGADGET: blogger-avatar

Tegra 4-based tablet reference designs offer a technical "recipe" for mobile device developers using the new mobile processor from NVIDIA, significantly accelerating the process of developing powerful new tablets.

ENGADGET: Tegra 4 reference tablets use SanDisk iNAND Extreme, mate a fast CPU with fast storage

Demo: an internal Haswell-based ultrabook reference design.

FORBES: CES: Intel Unveils Tablets, Phones, Laptops, Convertibles