Components and chemical states of the film were analyzed by XPS.

薄膜的成分及各元素的化学状态用光电子能谱(XPS)进行了分析。

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The sequential chemical extraction (SCE) method is used to study the chemical states of heavy metals in industry waste slag in this paper.

介绍了一种分析测定工业废渣中重金属的化学形态的方法：连续化学萃取法。

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The composition depth profile and chemical states of nitrogen-implanted layers were determined using X-ray photoelectron spectroscopy (XPS).

利用X射线光电子能谱（XPS）研究了注氮层中元素的深度分布和化学结构；

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Hess' Law states that for any chemical reaction, the energy change is path independent.

盖斯定律表明，对于任意化学反应，能量变化并非是路径依赖的。

麻省理工公开课 - 固态化学导论课程节选

I was at Princeton from 83 to 86, got my master in chemical engineering Now i serve as the administrator of the United States Envrionment Protection Agency My engineering background is extremely important to the job i do everyday.

3-86年我在普林斯顿大学学习，取得了化学工程的硕士学位,我现在的职务是,美国环境保护署署长,我的工程学背景,对我现在的日常工作十分重要。

普林斯顿公开课 - 领导能力简介课程节选

The Geneva Convention banning the use of chemical weapons by states has been on the books since 1925 and has been violated repeatedly, most notably of late by Iraq during the Iran-Iraq war.

CENTERFORSECURITYPOLICY: Blowing Smoke About Making Deadly Gas

The Convention will also likely exacerbate the present inadequacies of the United States' chemical defensive posture.

CENTERFORSECURITYPOLICY: Center For Security Policy

Our deterrence still provides protection from nuclear, biological and chemical weapons attacks by states, more of which possess these capacities than did at the end of the Cold War.

CENTERFORSECURITYPOLICY: Senator Kyl on nuclear deterrence