指定阅读书目之一是简·奥斯汀的《爱玛》。One of the set books is Jane Austen's Emma.船只必须在指定的港口把捕到的鱼卸下。The vessels will have to land their catch at designated ports.露营被限制在指定的5个野营地。Camping is restricted to five designated campgrounds....
这三座转炉都是纯氧 顶吹 的.These three converters are all pure oxygen top - blow .L. D. 炼钢法使用炉内砌有耐火砖的氧气 顶吹 转炉.The L. D. Process uses a top - blow oxygen converter lined with heat - resistant brick.这对中小型转炉钢厂比较适宜.This is right medium ...