Stoichiometry: Determination of the proportions (by weight or number of molecules) in which elements or compounds react with one another.
化学计量学：确定化学元素或化合物彼此反应的比例关系（用重量或分子数表示）。Madame Curie was an illustrious woman scientist who won the Nobel Prize twice for the discovery of two chemical elements.
居里夫人是一位杰出女科学家，她因为发现两种化学元素而两度荣获诺贝尔奖。Also has you to think your old trade union wants to kiss on your face these chemical element?
还有你想你老公会想亲你脸上的那些化学元素吗？We have made a careful study of the properties of these chemical elements.
我们仔细研究了这些化学元素的特性。Phosphorus is one of six chemical elements that have long been thought to be essential for all Life As We Know It.
磷长久以来一直被认为是我们所知道的生命体必需的六种化学元素之一。Stimulated by an X-ray beam, chemical elements in the painting fluoresce, revealing hidden pigments without damaging the artwork.
因为受到X射线的催化作用，油画上的化学元素发出荧光，在没有损坏艺术品的前提下显示出隐藏的画面。The German chemist Kekule dreamed of snakes biting their tails, therefore discovered the ring shape of the chemical compound benzene.
德国化学家凯库勒梦到蛇咬著自己的尾巴，因此发现了化学元素苯的环状结构。Kind of like a chemical finger print of spectral lines for that element appears.
一个化学元素的样式就被光谱线显现出来了。Two new chemical elements, numbers 114 and 116, have been officially recognized by an international committee of chemists and physicists.
两个新的化学元素——114号和116号——已经被一个由化学家和物理学家组成的国际性委员会正式承认了。