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三峡大坝的船闸是世界上最大规模的船闸,单扇闸门就有850吨重,船只经过整个大坝需要经过五级船闸逐次涨高或下降,全程要两个多小时,大坝露在水位高的一侧看起来像一条笔直的公路,但物理课本上的知识告诉我,要抵抗水底的强大的压强,大坝水底的部分要宽厚得多,坝体中还有32台单容量为70万千瓦的水电机组,所以我们眼前所见的真不过是其“冰山一角”罢了。
The lock of the Three Gorges Dam is the world’s largest ship lock. The single-fan gate has a weight of 850 tons. After the ship passes through the entire dam, it needs to go up or down successively through the five-stage lock. The entire journey takes more than two hours, and the dam is exposed to the water level. The high side looks like a straight road, but the knowledge in the physics textbooks tells me that to resist the strong pressure on the bottom, the bottom part of the dam should be much more generous, and there are 32 single capacity 70 in the dam. Million kilowatts of hydropower units, so what we see in front of us is nothing more than its “tip of the iceberg.”