抗渗透性 meaning in English

impermeability

Protective helmets - test methods - resistance to penetration
防护头盔.试验方法.抗渗透性
Protective clothing - protection against liquid chemicals - test method for resistance of materials to penetration by liquids iso 6530 : 2005 ; german version en iso 6530 : 2005
防护服装.对液态化学制品的防护.材料抗渗透性的试验
The experiment was done that the cured cement stone with addition of calcined kaolin were dipped into nacl solution of 2 . 5wt % , and the experiment results showed that addition of calcined kaolin made cement stone pore fine and cement mortar displayed high property of impermeability
煅烧高岭土的掺入可以使水泥石中的孔细化，通过对煅烧高岭土掺入水泥中标养后在2 . 5氯化钠溶液中浸泡试验发现，煅烧后的高岭土掺入水泥砂浆使其具有极好的抗渗透性。