fill dam是什么意思 fill dam怎么读
fill dam的用法和样例
- They built up an earthen dam in time.
他们及时地建起了土坝。 - The studies may indicate that an earthfill dam with a center concrete gravity overflow spillway section is the most economical, in a wide flat valley.
方案表明,在宽阔而平坦的河谷内,一种在中间段设置混凝土重试溢洪道的土坝是最经济的。
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