Add Ferroin indicator and titrate with 0.025 N ferrous ammonium sulphate solution.加入亚铁菲绕啉离子,用滴定法测量硫酸亚铁铵溶液.The water was reacting with the ferrous iron in the tank.水与水箱中的铁质产生化学反应.Using genedifferential gene expression in ...
蚯蚓吃下大量土壤，排出肥力丰富、物理结构理想的腐殖质。Earthworms consume large amounts of soil, and produce a rich humus, perfect in texture.有机物分解的最后程序称为腐殖质化.The final process in organic matter decomposition is known as humification.腐殖质是已知能够覆盖滤膜的物...
The examiners put a premium on rational argument.评委们对以理服人的论据给以高度评价.The examiners plowed half the candidates.主考人员刷掉了一半的应试者.The examiners can drop on any student to answer questions.主考人可以叫任何学生回答问题....
I was put on iron tablets for my anaemia.我曾因贫血吃补铁药片.The Earth is made mainly of iron and silicon and things like that...地球主要由铁、硅等物质构成。A centain iron are called lodestone would attract pieces of iron.某种称为磁石的矿石会吸引铁片.Conclu...
Conference participants were clearly enthused by their presence, and the two women responded by listening intently...她们的出席令与会者明显兴奋起来，作为回应这两位女士也专心倾听起来。I was immediately enthused.我立即兴奋起来。Conference participants were clearl...