高压手段

The influence of doped cerium amount and heat-treat ment temperature on the photocatalytic degradation efficiency of TiO2 film for oleic acid was investigated by high pressure liquid chromatography, ultraviolet -visible spectrophotometer and scanning electron microscope.

利用高压液相色谱、紫外-可见光分光光度计、扫描电镜和能谱仪手段对掺杂铈的TiO2薄膜进行了表征，考察了掺杂铈对油酸光催化降解效率及TiO2薄膜表面晶粒分布的影响，并对薄膜的化学成分进行了定性和定量分析。

In this paper, a turbostratic CN precursor was prepared by means of pyrolysis of melamine, then it was treated by high temperature and high pressure. The pyrolysis process of melamine, mechanism of hydrogen elimination and the effect of catalysts on pyrolysis of melamine were studied. The crystal structures, bonding states and chemical compositions of CN precursor obtained by pyrolyzing melamine are analyzed by X ray diffraction, burning spectrum, scanning elecron microscope and Fourier transform infrared Spectroscopy.

本文采用三聚氰胺热解法制备了乱层石墨结构的碳氮前驱物并进行了探索性的高温高压实验；研究了三聚氰胺热解的工艺、去氢机理以及催化剂对三聚氰胺热解过程的影响规律；借助 X 射线衍射、燃烧谱、透射电镜和红外光谱等手段，对获得的碳氮前驱物进行了成分、晶体结构、价键结构的分析。

In this thesis, we concentrate on the development in theoretical prediction and experimental synthesis of CN compounds in the recent 10 years. By means of ion beam sputtering, treating melamine at high temperature and pressure, pyrolyzing melamine and treating pyrolysis products of melamine by impulsive discharge and high-speed impact, we explore the routes to synthesize carbon nitrides. The chemical compositions, crystal structures and bonding states of the CN films and powders obtained from the experiment are studied by the use of EDX, XRD, TEM, XPS and FTIR.

本文概述了十年来碳氮化合物在理论预测和实验研究方面的进展；采用离子束溅射、三聚氰胺高温高压和三聚氰胺热解以及产物的脉冲放电和高速冲击加脉冲放电处理等三种方法，探索了碳氮化合物的合成途径；借助X射线能谱、X射线衍射、透射电镜、X射线光电子谱和红外光谱等手段，对所获得的碳氮薄膜和碳氮粉末进行了成分、晶体结构、价键结构等性质的分析。

In the 90's geoscientists both at home and abroad have applied the modern sophisticated methods and techniques in geoscientific research.

90年代，国内外地学工作者将现代科学的新方法、新技术应用于地球科学研究中，通过深海钻探、高温高压技术与地球物理手段等多种方法综合研究，致使在：地球的核-幔组分；CO2的起源、全球变化及其与成矿的关系；岩石圈的演化与缺氧事件、生物灭绝、海底扩张及成矿的相关性等诸多固体地球科学研究领域，均取得了若干最新的认识和重要进展。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。