impervious layer معنى"impervious layer" أمثلة على "impervious" معنى "layer" معنى "impervious" معنى "impervious floor" معنى "impervious surface" معنى "layer" معنى "aleurone layer" معنى "algal layer" معنى "angelic layer" معنى "atmospheric layer" معنى "bacillary layer" معنى "biotubated layer" معنى "boundary layer" معنى "bowman's layer" معنى "bruch's layer" معنى "canopy layer" معنى "carpet layer" معنى "choriocapillary layer" معنى "cortical layer" معنى "d layer" معنى "dense layer" معنى "dua's layer" معنى "duff layer" معنى "e layer" معنى "enamel layer" معنى أمثلة This is a force-field generator. it creates an impervious layer above the skin, just a nanometre thick.
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