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China science, technology news summary — Feb. 10

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BEIJING, Feb. 10 (Xinhua) — The following is a summary of published science and technology news of China.

CIVILIAN BDS PRODUCTS

China has published six documents detailing technical requirements and test methods for key civilian products using the BeiDou Navigation Satellite System (BDS).

The documents have been issued to facilitate the construction of a certification system for key BDS-3 products, according to the China Satellite Navigation Office.

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Y-12F AIRCRAFT

The China-developed Y-12F general aircraft has completed flight tests on its airborne geophysical prospecting capabilities, its developer announced.

The time-domain Y-12F aircraft completed flight tests on its airborne electromagnetic survey capacity on Feb. 6. The tests verify its airborne geo-prospecting capabilities, said the China Aviation Industry Corporation.

CLEARER LAKES

More than one-third of hundreds of 25-square-km and above lakes in the world have become clearer over the past 20 years.

About 36 percent of the world’s 1,049 large lakes and reservoirs saw their colors shifting from the yellow end to the blue end of the color spectrum, which generally means increasing clarity. They are concentrated in cold regions, such as the Qinghai-Tibet Plateau, northern Europe, northern North America and southern South America.

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