Key: double-bitted iron key, nickel plate. KA or KD.

钥匙：双面钥匙， 镀镍。通开/非通开。

youdao

Main business drawer lock, glass lock mailbox lock, iron key, 3 small spoon, automobile and ball cage buckle card products of professional manufacturers.

主要经营抽屉锁、玻璃锁、邮箱锁全铁锁匙、3号小匙、汽车内外球笼扣卡电柜锁等产品的专业厂家。

youdao

Iron is a key component of cars, trains, planes, ships, fridges, dishwashers and computers.

钢铁是各类汽车、火车、飞机、轮船、冰箱、洗碗机以及计算机的主要组件。

youdao

Ford has developed a prototype vehicle--the P2000--that replaces steel and cast iron in several key components as part of an effort to reduce the weight of a vehicle by 40%, which would create dramatic fuel efficiencies.

FORBES: Why Aluminum May Glow Like Gold

Iron ore was the largest contributor to Anglo's profit in 2011, but the firm said production at its key Kumba Iron Ore unit fell 19% to nine million tonnes, after five million tonnes of production were lost at its Sishen mine due to the strike.

BBC: Anglo American in platinum production slump

Iron ore, also a key component in the production of steel, seems poised to pop.

FORBES: Watch Out In Iron Ore, Coal, Copper When Easy Money Policies Are Done, Says Rio Tinto