针对公众对该疾病的不断蔓延日益担忧，从而出台了这一举措。The move follows growing public concern over the spread of the disease.从政治角度来说，你认为这些举措有效吗？Politically speaking, do you think that these moves have been effective?一些分析家认为，他的这一政治举措很高明。Some analy...
Borax must be reduced to powder for infants.硼砂必须研成细粉才能供婴儿使用.Borax is the compound commonly applied to the soil to correct boron deficiency.硼砂是矫正土壤缺硼的常用硼化合物.It was investigated that chromizing in borax salt bath and melti...
In 1818 Fresnel entered a competition sponsored by French Academy.1818年菲涅耳参加了法国科学院主办的一次竞赛.The difficulty was resolved by Fresnel with his addition of the concept of interference.菲涅耳通过加进来干涉概念,解决了这个困难.In many cases, the Si...