城市规划师决定建一个地下排水系统。
The city planner decided to build an underground drainage system.
介绍了小湾电站右岸地下排水系统的小洞室开挖爆破技术和设计参数。
The excavation technology and design parameters of a polit chamber blasting of underground drainage system in Xiaowan power station are introduced.
雨季通过地下排水系统淋洗排出的盐分数量大于灌溉季节引入的盐分数量。
The salts leached through the SSD system during the monsoon season was larger than the salt input to the soil through irrigation.
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