光对植物的叶子发生作用从而产生叶绿素.Chlorophyll is produced by the action of light on the plants'leaves.这一病害使叶绿素遭到不同程度的破坏.The disease causes varying degrees of destruction of the chlorophyll.叶绿素的分子结构已经搞清, 它是由卟啉组成的.The structure of t...
最幸福的人们并不一定什么都是最好,只是他们懂得欣赏生活的美好。The happiest are not those who own all the best things, but those who can appreciate the beauty of life.《古兰经》劝告人们在朝圣前斋戒,以作为一种补赎。The Koran recommends fasting as a penance before pilgrimages....
Aluminium is rapidly oxidized in air.铝会在空气中迅速氧化。Aluminium is rapidly oxidized in air...铝会在空气中迅速氧化。When an element is caused to combine with oxygen it is oxidized.当使一种元素与氧化合时,即称其被氧化。 The original white lead pigments have ...