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1 棚体改造 (1)旧棚加高。要求前边1.0~1.5米,后墙1.8~2.3米,脊高2.6~3.2米。
1 shed transformation (1) old shed higher. Requirements in front of 1.0 to 1.5 meters, 1.8 to 2.3 meters behind the wall, ridge height 2.6 ~ 3.2 meters.