Jinan o rewa awon boolu ni ara didara iṣakoso egbe ati didara igbeyewo ọfiisi fun igbeyewo gbogbo ipele boolu.
Spectrometer jẹ gidigidi o muna fun kemikali tiwqn erin, paapa fun simẹnti boolu.
Jinan o rewa awon boolu ni ara didara iṣakoso egbe ati didara igbeyewo ọfiisi fun igbeyewo gbogbo ipele boolu.
Spectrometer jẹ gidigidi o muna fun kemikali tiwqn erin, paapa fun simẹnti boolu.