It is held there by the force of surface tension without which water would drain instantly from any wet surface, leaving it totally dry.
它是由表面张力的力量保持的，没有它，水会立即从任何潮湿的表面流失，使它完全干燥。
That can include beams, posts, drain lines, water piping or surface-mounted wires.
包括横梁、柱子、排水管道、供水管道或表面贴装线。
That can include beams, posts, drain lines, water piping or surface-mounted wires.
包括横梁、柱子、排水管道、供水管道或表面贴装线。
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