During 13-15 March 1988, a rare heavy wind in history happened in the East China Sea region.

1988年3月13 ~ 15日在中国东部海域发生了一次历史上罕见的大风天气过程。

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Pinghu oil and gas field(PHOGF)is the first-developed field in East China Sea petroliferous region, and H2 is the major reservoir of the field.

平湖油气田是东海油气区第一个投入开发的油气田，H2油藏是平湖油气田的主力油藏。

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The South China Sea is a huge marginal sea at East-Asian continental margin, and a tectonic region of the transitional crust type from continental to oceanic.

南海是东亚大陆边缘的巨型陆缘海，属大陆—大洋过渡型地壳构造区。

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"They may be just testing the Japanese since they are preoccupied with the island issue" in the East China Sea, said James Hardy, a senior analyst for Asian Pacific region with Jane's Defense Weekly.

WSJ: Japan: Russian Fighter Jets Enter Its Airspace