Their width of 1.7 km and height of 108 meters makes them the largest sheet of falling water in the world; although, they are not the widest or the largest.
它们宽1700米，高108米，这样的数据是世界第一。尽管，他不是最宽也不是最大的。
When the water tank after falling, floating ball valve to open, the control room pressure drops, the main valve to open again to water, keep the level set height.
当水池水面下降后，浮球阀重新开启，控制室水压下降，主阀再次开启继续供水，保持液面的设定高度。
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