常見例句雙語例句Once the coating is consumed, the unprotected thin sheet steel disintegrates in a few years.一旦鍍鋅表皮失效，那么薄薄的鋼板便失去了保護，幾年之內(nèi)就會開裂。blog.sina.com.cnResults showed that, due to the heat absorbed by the concrete, the temperature field was lower than that of unprotected steel structure;結(jié)果表明：由于混凝土的吸熱作用，鋼梁的溫度明顯低于無混凝土時的裸鋼構(gòu)件； 返回 unprotected steel