查询词典 ethylene

The effects of ethylene-methyl acrylate copolymers on the shapes and electric properties of wax crystal was studied by polarising microscope and microscopic electrophoresis apparatus .

利用偏光显微镜和微电泳仪研究了乙烯-丙烯酸甲酯共聚物对蜡晶的形态和电性质的影响。

The new technology of potassium sulphate by potassium chloride and ammonium sulphate with the existing condition of ethylene glycol is discussed, and it has simple technology, high yield of potassium oxide and superior quality of production compared with that of synthesized in distilled water.

并对乙二醇溶液条件下氯化钾和硫酸铵复分解制备硫酸钾工艺进行了探讨，和水盐体系相比，具有工艺过程简单，氧化钾收率高和产品质量好等优点。

Under the condition of consumption of raw material naphtha not to be increased, two processes of pre-hydrogenation and pre-extraction was developed in the ethylene complex project and the investment and operation cost evaluated.

在不增加石脑油原料消耗量前提下，开发乙烯联合装置裂解原料前加氢和前抽提2个改进流程，并计算该装置的工程投资与运行费用。

The surface free energies and polar components of PTW modified with OTS were calculated by measuring contact angles of benzene, ethylene glycol, water on the palletized surfaces.

和所有超细材料存在的问题一样，PTW表面能高，极易团聚，表面具有很强的亲水性，与有机基体的润湿性差。

A number of lines evidence indicate that calcium treatments maintain the structure and function of the cell walls, increase the fruit firmness, decrease the activity of the cell wall degration enzymes and ethylene production, maintain the integrity and stability of the membrane, activate some oxidases, induce phytolexin and regulate cell function as a signal mobecular.

钙的防腐机制在于对果蔬采后腐烂的控制，保持细胞壁的结构与功能，增强果实硬度，降低细胞壁降解酶的活性，抑制呼吸，降低乙烯生成量，保持细胞膜的完整性，激活体内的某些氧化酶，诱导合成植保素，作为信号分子，调节细胞功能。

Some technologies,including olefines from methanol,oxalates and ethylene glycol from carbon monoxide,carbon dioxide-based polymers,chemicals from the syngas prepared by biomass gasification,acetone and butanol by fermentation,and chemicals from acetylene,ethanol,glycerol,furfural,hydroxymethyl furfural and starch,were reviewed.

包括甲醇制烯烃，一氧化碳制草酸酯和乙二醇，乙炔化学品，二氧化碳聚合物，生物质气化合成化工产品，发酵法生产丙酮、丁醇，乙醇衍生化工产品，甘油合成化工产品，糠醛和羟甲基糠醛合成化工产品，淀粉合成化工产品等重要的石油替代化学品生产技术被介绍。

Recent advances in heterogeneous catalyst s of ethylene oligomerization to α-olefins is summarized.

综述了国内外近几年乙烯齐聚制α-烯烃多相催化剂的研究进展。

Catalytic thermal cracking technology, making use of VGO and residue as feedstock and solid acid catalyst which consists of ZSM-5 zeolite as major activity components, is a new process of producing low-carbon olefines composed of ethylene and propylene mainly under certain condition in FCC plant.

催化热裂解技术是以减压馏分油和渣油为原料，使用以ZSM-5分子筛为主要活性组元的固体酸催化剂，在催化裂化装置上，在一定的工艺条件下生产乙烯和丙烯为主的低碳烯烃的一项新工艺。

The effects of ultrasonic irradiation on extrusion processing of polypropylene, PP/ethylene-propylene-diene monomer terpolymer blends and crystallization behavior of PP in different PP/nucleators system are studied.

本文利用超声-挤出装置和静态超声辐照装置，研究了挤出过程中超声作用对PP，PP/EPDM体系的流变行为，结构与性能的影响以及PP、PP/成核剂NaBz、MHS、NC-4、TM-1、Talc、Talc(KH及Mica体系在超声辐照作用下结晶行为的变化。

A study of the application of cyclic ethylene urea-formaldehyde resin finish on cotton and viscose rayon fabrics has been made.

根据国内的需要和已有的资料，我们对环亚乙基尿素——甲醛树脂在棉布及人造棉织物上的应用，进行了初步的研究。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。