Large diameter GRP sand pipe used in Changjiang Water Diversion Project (III) is paved for the first time in the soft ground.
长江引水三期工程采用大口径玻璃钢夹砂管，是首次在软土地基上敷设。
Large diameter GRP sand pipe used in Changjiang Water Diversion Project (III) is paved for the first time in the soft ground.
长江引水三期工程采用大口径玻璃钢夹砂管，是首次在软土地基上敷设。
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