They worked until exhausted, lived with few protections and died young.他们直到用尽工作, 由于很少的保护居住而且死年轻的.Recommendation on improvements of safety protections of nuclear installation.四核子设施安全防护改善之建议.It includes protections for peo...
用合成纤维,像尼龙 、 多元酯 、 压克力或烯属烃.We use synthetic materials such as nylon, polyester, acrylic or olefin.烯属烃强韧抗湿气;压克力则又轻又抗日光.Olefin is strong and resists moisture while acrylic is light and can resist sunlight....