求翻译： HYDROCHINA勘测设计的龙滩水电站，总库容273亿立方米，总装机容量6300MW，RCC重力坝坝高216.5米，是世界在建第一高RCC重力坝。是什么意思？

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*  HYDROCHINA survey design of the Longtan Hydropower Station, total 27.3 billion cubic meters, with a total power capacity 6300 MW, RCC gravity dam and high 216.5 meters, is the world-First High RCC gravity dam.

 The HYDROCHINA survey design dragon beach hydroelectric power station, the total storage capacity 27,300,000,000 cubic meters, the total installed capacity 6300MW, RCC gravity dam dam height 216.5 meters, are the world are constructing the first high RCC gravity dam.

• HYDROCHINA of survey and design of Longtan hydropower station, with a total capacity of 27.3 billion cubic meters, with a total installed capacity of 6300MW,RCC dam 216.5 meters high, is the world's first high RCC gravity dam under construction.

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