To avoid cracking of the casting, there should be ____________ for shrinkage during solidification
举一反三
- ( ) cracking is generally encountered during postweld heat treatment (PWHT) of steels A: Reheat B: Stress relief C: Hydrogen induced D: Solidification
- Casting solidification is generally divided into three types:__________, __________ and __________.
- What should we try to avoid during food eating?
- What should be done to avoid possible technical failures during presentation?
- If you are going on holiday during the weekend, which place should you avoid?