ক্ৰম’প্লাষ্টক্ৰান্তদৰ্শী
ক্ৰল পদ্ধতি (Assamese)
1. Technology-EngineeringThe Kroll process is a pyrometallurgical industrial process used to produce metallic titanium from titanium tetrachloride. The Kroll process replaced the Hunter process for almost all commercial production... from wikipedia.org