hard substances翻译
hard substances的基本解释
读音: 美: 英:
硬物：指具有坚硬质地的物质。
例句
The problem was not that such substances were so hard to find - on the contrary.问题不是这样的物质很难发现——恰恰相反。Hard water contains high concentrations of minerals and other substances that may provoke allergic reaction.因为硬水中含有可能导致过敏反应的高浓度矿物质和其它物质。
Because coke sewage contains lots of hard-biodegraded and toxicant substances, it is considered one of the industrial waste water which is difficult to purify.焦化废水由于含有大量的难生物降解与有毒物质，因而成为公认难处理工业废水之一。
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