13. อันตรายจากก๊าซเรดอน ก๊าซเรดอนเป

13th.The dangers of radon gas. Radon is a radioactive gas. Often found inserted in the soil and rock properties that can be absorbed through the surface. And spread out into the air through cracks and holes in the concrete block the pipe.Respiratory system.

13. The dangers of radon gas, radon gas is a gas and radiation kammantaphap. Usually found in soil and rocks with properties that can be absorbed through the skin on the soil and spread out into the air, through the cracks of concrete pipe and block by the hole. Respiratory system.

13.danger of gas radon gas radon is a gas radioactivity is usually found inserted in the earth, and there are features that can be through stone, land on the skin and spread out into the air through a hole in a crack and concrete block in accordance with the tube.Respiratory system