Kovar

例句：

1. 1.The Kovar glass is a popular choice for kitchen countertops.
   科瓦玻璃是厨房柜台的热门选择。
2. 2. The Kovar helmet is designed to protect the wearer from head injuries.
   科瓦头盔设计用来保护佩戴者免受头部伤害。
3. 3. The Kovar armor was used in medieval battles to protect soldiers from arrows and other projectiles.
   科瓦盔甲在中世纪战斗中被使用来保护士兵免受箭矢和其他投射物的伤害。