उस उष्मा उपचार प्रक्रिया का नाम बताएं जिसमें एक औजार के कठोरण के बाद अपेक्षित संदृढ़ता गुणधर्म प्राप्त करने के लिए उसे पुनः तापित व शीतलित किया जाता है

-> ISRO Technician Fitter recruitment notification 2025 has been released

->Candidates can fill ISRO Fitter application form from June 2 to 16. 

->A total of 20 vacancies are announced for ISRO recruitment 2025 for Fitter.

->Candidates must have passed SSLC/ SSC/ Matriculation and should have NTC/ITI/NAC in ->Fitter Trade Certificate from an NCVT recognized by the government to satisfy the ISRO Technician B Fitter Eligibility Criteria.