钢筋混凝土桥腐蚀破坏,系由于防冰盐 、 海盐和环境污染的作用. Steel - reinforced concrete bridges are deteriorating from the corrosive effects of de - icing, marine salts, and environmental pollutants.
People have long dreamt of an egalitarian society.人们梦想有一个平等的社会，由来已久。They accept and value people as individuals, and are strongly egalitarian.他们接受并尊重他人的独立性, 极富平等精神.Some economists have used these results as egalitarian d...
It adopts outer pipe co - extrude technology, improving the joint stress among layers.采用的外管共挤技术, 提高了管材的层间结合强度.Relative concentrations of molecular and metallic ions in midlatitude intermediate and sporadic - E layers.在 中...