水密，船体浸水或舱、柜冲水后，其结构和相应的关闭设备等在一定的水压作用下保持不透水的密闭性能。
adj. watertight
水密性 water tightness ; water proofness
洪水密室 Flood The Chamber
水密的 water tight ; leaktight ; waterproof
水密型灯具 underwater luminaire ; water-tight luminaire
水密舱区 watertight compartment ; watertight subdivision ; water tight subdivision ; water tight compartment
水密甲板 water tight deck ; watertight flat ; watertight deck
水密试验 watertight test ; water pressure test for tightness ; water tight test
水密肋板 water tight floor
水密封试验 Water Seal Test ; Shell Test
只有柚木才能达到橡木的膨胀系数，并保持水密性。
Only teak matches oak's expansion coefficient and stays watertight.
含盐量较低的地表水密度较低，因此下沉和搅动深水的可能性较小。
Less salty surface waters would be less dense and therefore less likely to sink and stir up deep water.
没有桅杆、一半的甲板已经损毁、船体的水密性也令人怀疑。
She had no masts, half of the deck had been torn away, and the water-tightness of the hull appeared dubious.
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