A cough, often producing a greenish or rust-colored mucus, is one of the characteristic symptoms of the illness, along with fever, chills, chest pain, weakness, fatigue, and nausea.
肺炎的特征性症状为咳嗽会产生绿色或锈色的粘液，并伴随有发热，寒战，胸痛，虚弱，疲劳，恶心。
An object of the present invention is to provide a method for producing granulated metallic iron superior in rust resistance.
本发明的一个目的是提供一种用于生产耐锈蚀性优良的粒状金属铁的方法。
Instructions: the product can deoxidize the coppers. It contains certain friction producing substance and can remove the rust completely without damage the copper.
产品说明：该产品能将铜的氧化物还原，并带有一定的摩擦剂可以彻底去除铜锈，并且不伤铜材本身。
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