The plate is enriched in U and Th revealed by Pb-isotopic study, which plays an role of essential prerequisite for the formation of U province.

铅同位素研究揭示，该板块富铀、钍，从而为铀矿省的形成提供了必不可少的地质前提。

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RMB exchange rate no longer pegged to the U. S. dollar and formed a more flexible exchange rate formation mechanism.

人民币汇率不再盯住美元，形成了更有弹性的汇率形成机制。

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Curtiss F9C-2 "Sparrowhawk" fighters, flying in a "v" formation, circa 1933-1935. (Image courtesy of the U. S. Naval Historical Center.)

雀鹰战斗机，以V型编队飞行，约在1933 - 1935。(影像提供：美国海军历史中心)。

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