zero radioactivity 예문

예문

1. After the examination , the sandstone is zero radioactivity , non - toxic ， tasteless , no pollution ， sound - absorbing , moisture - absorbing , moistureproof , slip resistance , light - absorbing and so on , it is a natural environmental protection stone material which the marble and the granite incomparable
2. After the examination , the sandstone is zero radioactivity , non - toxic ， tasteless , no pollution ， sound - absorbing , moisture - absorbing , moistureproof , slip resistance , light - absorbing and so on , it is a natural environmental protection stone material which the marble and the granite incomparable
3. After the examination , the sandstone is zero radioactivity , non - toxic ， tasteless , no pollution ， sound - absorbing , moisture - absorbing , moistureproof , slip resistance , light - absorbing and so on , it is a natural environmental protection stone material which the marble and the granite incomparable