ตัวอย่าง impermeable

• From the eighteenth century landowners had recognised the need for effective techniques for draining impermeable clay soils.

• However, although the seed coat remained impermeable, and so imbibition was not possible, there appears to have been a response to the high external humidity.

• The degree to which septate junctions may render a cell layer impermeable appears to be highly variable.

• The theory has been applied to both impermeable and porous stationary and moving journal-bearing systems.

• We investigate the propagation of the two fluid layers along a horizontal, impermeable boundary of a porous layer.

• These shallow wells are apparently made possible by the presence of perched water tables that rest on impermeable geologic strata.

• The chalaza, where the ovule was attached to the fruit, was the last portion of the seed to become impermeable.

• Crudely speaking, the channel itself may be viewed as a pipe (cylinder) embedded in an impermeable membrane.

• There was a general positive correlation between proportion of fresh seeds with impermeable coats and thickness of the water-impermeable and mechanical layers.

• The five species presenting impermeable seed coats do not manifest identical behaviour.

• A possibly longer storage period in the second year might have resulted in dormancy loss and in a corresponding decrease in percentages of impermeable seeds.

• In this paper the problem on the impermeable parachute of optimum shape in a subsonic gas flow is solved.

• Outcomes of children receiving the intervention prove that this pathway can be altered and is not impermeable.

• However, other studies have shown that soil microbes have no effect on rendering impermeable seeds permeable.

• Physical dormancy means the seed (or fruit) coat is water impermeable.