Acids neutralize alkalis and vice versa.酸能使碱中和,碱亦能使酸中和.What's the scale that's used to compare the strength of acids and alkalis?用何种标准来比较酸碱度？Aluminium and other metals are normally badly corroded by alkalis.铝和其...
Some outraged readers said the story was extremely offensive and distressing.一些感到义愤的读者说这篇报道极为令人反感，而且非常伤人。Tranquillizers help alleviate the distressing symptoms of anxiety.镇静剂有助于缓解焦虑所带来的不安症状。All who saw the distressing sc...
在原子物理学的术语中, “ 壳层 ” 一词是经常使用的.The word'shell " is used extensively in the terminology of atomic physics.所有的碱金属都在闭合壳层之外有一单个S电子.All the alkali metals have a single s - electron outside a closed shell.原子核形变证实壳层结构.Nuclear...