radiation hardened circuit

radiation hardened integrated circuit

alternation current circuit {= AC circuit}

earth circuit [= earth return circuit]

enlarged circuit and compensation circuit

single filip-flop circuit (sff circuit)

trip circuit and closing circuit

15-5PH precipitation hardened stainless steel

17-4PH precipitation-hardened stainless steels

17-4PH(precipitation-hardened )stainless steels

42CrMo hardened gear

45-hardened steel

age-hardened

age-hardened Al-alloy

austenite hardened case

Bake Hardened Steel

case hardened casting

case hardened glass

case hardened steel

case-hardened