热化学

The effect of thermal and anaerobic ageing on the structure and properties of NR vulcanizates was studied.The crosslinking density and distribution of NR vulcanizates during ageing were determined with the method of devulcanization by using the chemical probes,and the physical and dynamic properties were also determined.

研究了热空气老化和真空老化对NR硫化胶结构和性能的影响，采用化学探测剂脱硫的方法测定了老化过程中NR硫化胶交联密度及交联键分布变化的情况，同时测定了硫化胶的力学性能和动态性能随时间变化的情况。

Besides, HFA with dicarboxylic acid not only as the thermal cross-linking agent but also enhanced the flexibility and chemical stability.

此外，六氟戊二酸因具有双石炭酸，不但可以当作热交联剂，且可提升膜的韧性和化学稳定性。

The mineralogical characteristics of dioctahedral micas have been studied by chemical analysis, XRD, IR, DTA, SEM and IEM.

用化学分析、X射线衍射、红外光谱、差热和热重分析、扫描电镜及透射电镜等研究了白云母、绢云母和伊利石的基本矿物学特征。

The PCBN cutting tool, with many advantages such as good wear resistance, thermal and chemical stability, low friction factor and so on, has incomparable superiority when hard machining ferreous materials, instead of grinding, is becoming a new kind of finish machining way.

PCBN刀具具有硬度高、耐磨性好、热稳定性和化学稳定性好，导热性良好以及摩擦系数低等优点，在硬态加工铁系材料时具有无可比拟的优越性，正逐步取代磨削加工而成为一种新的精加工途径。

It has the following characteristics such as chemical corrosion resistance, aging resistance, gasproof, climate-proof , antiflaming, convenient transportation, simple construction, good performance of sealing and high efficiency of heat transmission, etc.

它克服了传统方式的补口防腐，密封保温存在的不足，具有以下特点：耐化学腐蚀，耐老化，耐气候，阻燃，运输方便，施工简单，密封性能好，传输热效高等特点。

The article discusses the hydrological conditions, the boundary, the geothermic liquid chemical and heat storing characteristics as well as its buried conditions of Xiatang geothermal field in Lushan county, and analyzes the liquid field characteristics and its dynamics, and ground temperature characteristics.

本文对鲁山县下汤地热田地热地质条件、地热流体化学特征、地热田边界、热储特征及其埋藏条件，进行了论述；分析了地热流体流场特征及其动态、地温场特征

The results based on the gas, carbon isotope and water chemistry geothermometer suggest that the temperature of the deep reservoir is about 250±7℃, while the temperature ranges of the median and shallow reservoirs are 241~190℃ and 195~154℃ respectively....

气体、同位素、水化学地球化学温标显示，深层热储的温度约为 2 5 0± 7℃、中、浅层地热储温度的变化范围分别为 2 41～ 190℃和 195～ 15 4℃。根据岩浆来源 CO2 和 CH4之间的碳同位素分馏值计算，目前该区深部岩浆热源的温度应高于 5 14℃。

Ginger's pungency mainly comes from chemicals such as gingerols ([6]-, [8]-, [10]-gingerol), shogals ([6]-, [8]-, [10]-shogaol). Of those, [6]-gingerol and [6]-shogaol are present in the largest amounts, and are the main active pharmacological ingredients in ginger as well. Gingerols, with the amount directly proportional to the age of the ginger, are thermally unstable, and at high temperatures change easily into shogaols.

姜辛辣味的化学成分主要是gingerols（[6]-， [8]-， [10]-gingerol）、shogals（[6]-， [8]-， [10]-shogaol）其中又以[6]- gingerol、[6]-shogaol的含量最多，也是姜的主要药理活性成分。gingerols具热不安定性，在高温下会变化成shogaols，因此，生姜富含[6]- gingerol，乾姜富含[6]-shogaol，且其量与生长年数成正比。

The structure of resultant IPN hydrogels was successfully characterized by Fourier transform infrared spectroscopy and scanning electron microscopy; the water retention at 50℃ was measured gravimetrically; dependence of storage modulus on temperature and phase transition behavior were investigated by dynamic mechanical analysis and differential scanning calorimetry, respectively.

利用FTIR和SEM分别表征了凝胶的化学结构和内部形态；测定了凝胶在高温(50℃)时的退溶胀性能；利用DMA和DSC分别研究了凝胶的储能模量随温度的变化及热相转变行为。

Hot corrosion behavior of Na2SO_4 coated B-1900 alloy was studied in air at 827 and 750℃.Corrosion kinetics of the coated alloy was gravimetrically measured,and contents of water soluble ions in the reaction products were chemically analyzed.X-ray diffraction and EMP techniques were employed to determine the components and morphology of the corrosion product scale.

用涂 Na_2SO_4盐膜法研究高温合金 B-1900在827℃和750℃于空气中的热腐蚀行为，测定其腐蚀动力学曲线，用 X -射线衍射和电子探针元素面扫描方法分析腐蚀产物的相组成和成份，还对其中的水溶性离子进行化学定量分析。

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％。