求翻译：排水栓和地漏的安装应平整、牢固，低于排水表面，周边没有渗漏，地漏水封高度不可以小于50mm;卫生器具交工前应满水和通水试验。是什么意思？

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The drain plug and the floor drain installment should level, reliably, is lower than the drainage face, peripheral has not seeped, the floor drain hydraulic packing may not be smaller than highly 50mm; In front of the hygienic appliance hand over completed work should Man Shui and the watering exper

Water hydrant and floor drain installations should be smooth, firm, below water surface, around there is no leakage, leaky seal height not less than 50mm health equipment completion should be filled with water and water test.

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