power tail gate
动力尾门
以上为机器翻译结果，长、整句建议使用 人工翻译 。
When the tail water level is higher than the ground of a hydro-power plant, the repairing and safety of the plant will be affected without water seal in the tail gate.
当水电站尾水位高于厂房地平面时，如果尾水闸门不能止水，势必影响电站的检修和安全。
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