一些最高档的酒杯是用铅晶质玻璃制成的。Some of the finest drinking glasses are made from lead crystal.他参与了石油、锌和铅的勘探。He was involved in oil, zinc and lead prospecting.无铅汽油每加仑涨了1分多。Unleaded gasoline rose more than a penny a gallon....
To protective material used in surfacing and finishing flake off.用于保护表面材料的涂层或保护层因失去黏附力而剥落,脱落.For surfacing welding on cold die and cutting tool.冷冲模及切削刀具的堆焊.A new type of maraging steel metal powder cored wire for die TIG...
他们约在七年之前将这家畜去势.They had the animal neutered some seven years back.他们饲养家畜, 例如山羊和牛.They keep animals, e . g . goats and cattle.家畜吃早春的苜蓿而上膘.Herds are fattening on the early clover....