例句與造句

1. Fabrication and inspection method for high pressure urea equipment selective corrosion and metallographic examination on the urea grade extra low carbon cr - ni - mo austenitic stainless steel
   尿素高壓設(shè)備制造檢驗(yàn)方法.尿素級(jí)超低碳鉻鎳鉬奧氏體不銹鋼的選擇性腐蝕檢查和金相檢查
2. It's difficult to find selective corrosion in a sentence. 用selective corrosion造句挺難的