mistake proofing
ポカよけ
poka-yoke
foolproof
idiot-proof
/suto3/google.iconmistake proofing
/suto3/Google画像検索.iconmistake proofing
/suto3/Google定義検索.icon mistake proofing
/suto3/wikipedia.iconmistake proofing
/suto3/weblio.icon mistake proofing
/suto3/kotobank.icon mistake proofing
/suto3/jisho.icon mistake proofing