查询词典 chemistry

Recently, this area has become the advanced study of Inorganic chemistry, crystal chemistry and material chemistry in the international.

近年来，这一领域成为国际无机化学、晶体化学和材料化学等学科的前沿课题。

State Key Laboratory of Organometallic Chemistry , Laboratory of Analytical Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , Shanghai 200032, China

1金属有机化学国家重点实验室，中国科学院上海有机化学研究所，上海200032，中国

Objectives Organometallic Chemistry is an interdiscipline of organic chemistry and inorganic chemistry.

课程目标：金属有机化学是一门有机化学和无机化学两学科之间的交叉学科。

The journal well informs the research advances of the chemistry of wood, wood components and wood products to chemists, pharmaceutist, biological scientists and wood and paper technologists, including the chemistry of pulping, lignin, cellulose, hemicellulose, extractives chemistry, wood and bark chemicals and biomass conversion or utilization etc.

该杂志为化学家，药剂师，生物科学家以及木材与纸张技术专家全面提供了木材化学，木材成分以及木材产品的研究进展，包括纸浆化学，木质素，纤维素，半纤维素，提取物化学，木材与树皮化学制品以及生物的数量转换或利用等等。

According to local resources linking with the reality of teaching in analytic Chemistry experiment, the au lay the reform plan of teaching in analytic chemistry experiment and suggest to classify the course of analytic chemistry experiment.

结合资源，联系分析化学实验教学现状，提出了分析化学实验教学的改革计划方案。主张将分析化学实验课程分为三个层次：基础分析实验———实际应用型实验———知识创新型实验

Our Co.,Ltd. had obtained ISO9001:2000 quality system certificate. We also obtain product manufacture charter of explosion-proof luminaires and electrical equipment of Chinese industry. Our company is the Member Factory of Petroleum Chemistry Market Resources of Chinese Petroleum Chemistry Industry. Our product had notarized Recommendatory Product of Chinese Petroleum Chemistry Project.

公司已经取得ISO9001：2000质量体系认证证书，公司获得防爆灯具、防爆电器产品的《全国工业产品生产许可证》的资质，并且通过国家有关权威机构审定，成为中国石化物资资源市场成员厂，产品被批准确认为《石油化工工程建设所需推荐产品》。

By systemic researching and simulating experiment, the text gains such results as follows,1. On the base of sufficiency research on the oil-gas hydrocarbon systemic chemistry composing and the physical chemistry characters, we traverse the mechanism of the paraffin's deposition. Then we consider that paraffin deposition is a complex process ofphysical chemistry, which includes more than one single mechanism.2. Traversing and comparing the literature in detail on different factors that has effect on paraffin deposition, the available experimental methods on paraffin deposition, prevention of paraffin deposition, and removing of the deposited paraffin on the spot.3. Ameliorated the laser equipment of solid particle inspecting system and the corresponding test methods. Determine WCT of dead oil and live oil from KS101 well under different pressure with this system. The result implies that dead oil has opposite regulation on paraffin deposition temperature to live oil.4. A vapor-liquid-solid envelop is drawn by superposition regular vapor-liquid envelop and WCT curve thereby explained that the departure and quick raising of the curve in the low temperature zone is caused by the appearance of paraffin in solid phase.5. Estimation is made to determine the depth of paraffin deposition in the well.

通过系统的研究和实验模拟，本文取得了以下研究成果：(1)在充分调研油气烃类体系的化学组成及其物理化学特征的基础上，详细研究了石蜡沉降的机理，认为石蜡沉积是一个复杂的物理化学过程，是多种机理共同作用的结果；(2)深入调研并综合阐述了影响石蜡固相沉积的各种主要因素，对目前国内外常用的有机固相沉积实验研究方法和现场清防蜡措施也做出详尽的描述，并加以对比评价；(3)改进了油气藏开发重点实验室自行研制组装的高温高压下测定固相沉积的激光装置和测试方法，并用该套设备测定出柯深101井的井口脱气油样和凝析气平衡油样不同压力下的析蜡点，实验结果表明，脱气油和平衡油析蜡规律相反；(4)将常规气-液两相相图和析蜡曲线叠加得到了气—液—固三相相图，从而解释了气-液两相等液量线在低温区域偏离正常并快速上翘是由于体系有石蜡固相出现；(5)利用实验测试的析蜡温度预测析蜡位置，表明只有在距井口465m油管以上会有蜡析出。

The students can improve their ability of learning chemistry while their ability of metacognition is improved. 2. The mode of training metacognition , which is founded in chemistry teaching of junior middle school for the learning disabilities students, and its specific training measures are efficient and actable to improve the chemistry study of the learning disabilities students.

我们所构建的在初中化学教学中对学习障碍学生进行元认知训练的模式及在此模式下的具体训练措施是有效的、可行的，对化学学习障碍学生的学业成绩的提高有促进作用。

Institute of Physical Chemistry,College of Chemistry and Molecular Engineering ,State Key Laboratory for Structural Chemistry of Unstable ＆ Stable Species,Pek ing University,Beijing 100871;Department of Biophysics,The School of Basic Medical Sciences,Peking University,Beijing 100083;Institute of Organic Chemis try,Chinese Academy of Sciences,Shanghai 200032

高峰；沙印林；邱阳；王跃丰；李银玲；来鲁华；吴厚铭北京大学物理化学研究所，化学与分子工程学院分子动态与稳态国家重点实验室，北京 100871；北京大学基础医学院，生物物理系，北京 100083；中国科学院上海有机化学研究所，上海 200032

The purpose of the examinatorial and designing analytical chemistry experiments is to develop students' abilities of utilizing the learned knowledge on analytical chemistry to solve the problems on experiment and improve their comprehensive abilities and skills in analytical chemistry.

分析化学实验是我校应用化学专业、食品分析专业、生物技术专业、动物医学专业和动物科学专业等学生必修的专业主干课，它的开设为培养和训练学生具有较强的科学实验能力和逻辑思维能力、分析问题和解决问题的能力，及具有良好的科研素质奠定了基础。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。