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- In contact with a hot surface, naphtha petroleum fractions crack to produce ethylene and propylene. 石脑油馏份与一个热表面接角,就裂解而得到乙烯和丙烯。
- Ethylene and propylene for industrial use. Determination of traces of carbon monoxide and carbon dioxide. Gas chromatographic method. 工业用轻烯烃。乙烯和丙烯。一氧化碳和二氧化碳痕量的测定。气相色谱法。
- The total selectivity of ethylene and propylene can be up to 88% The MTO and DTO reactions showed different characteristics. 乙烯、丙烯的总选择性最高可达到88%25。MTO和DTO反应表现出不同的反应特性。
- All products are used-the whole fluoroacetamide tetrafluoroethylene ethylene and propylene, high temperatures molded from processing. 所有产品均采用聚全氟乙丙烯及四氟乙烯,经高温模压加工而成。
- It was found that the import polypropylene copolymers were random ethylene and propylene copolymers with long line chain polyethylene. 结果表明,进口共聚聚丙烯涂覆料是含有聚乙烯长直链的乙丙无规共聚聚丙烯。
- One is the same downstream products that can be gotten from ethylene and propylene,such as chloroethylene, vinyl acetate and acrylic acid, etc. 另一类是乙炔专用化学品,如炔醛法化学品(1,4-丁二醇系列)乙炔基醚、聚乙炔等。
- There are several major petrochemical intermediates that are presently manufactured with high-purity oxygen including ethylene and propylene oxide (antifreeze), vinyl chloride(for PVC), and caprolactam (for nylon). 目前,几种重要的石化半成品是用高纯度氧生产的,包括乙烯、环氧丙烷(防冻剂)、氯乙烯(用于PVC)和己内酰胺(用于尼龙)。
- Roughly half of the product derived from thermal-cracking of long-chain hydrocarbons was C2 and C3 gases, useful for thier ethylene and propylene content, but not for the gasoline technology of the 1930s. 长链碳氢化合物热裂化所得的产品大约有半数是分子中含2个或3个碳原子的气体,其中的乙烯和丙稀是有用的,但并不适用于30年代的汽油工艺。
- Ethyne has two kinds of downstream products.One is the same downstream products that can be gotten from ethylene and propylene, such as chloroethylene, vinyl acetate and acrylic acid, etc. 乙炔的下游产品可以分为两大类,一类是石油乙烯、丙烯等也可生产的下游产品,如氯乙烯、醋酸乙烯和丙烯酸等;
- Brazilian also prepares ethylene and propylene with sugarcane ethanol.Furthermore,the industrial chains of plastic material is spreaded by developing bioethanol and polyethelene is prepared. 巴西还基于甘蔗原料以乙醇生产乙烯和丙烯,并发展生物乙醇拓展塑料产业链,生产聚乙烯。
- Determination of Ethylene and Propylene in the Air of Work Place 工作场所空气中乙烯、丙烯的测定
- Partial oxidation of hydrogen sulphide in the manufacture of hydrogen, sulphur, ethylene and propylene 利用硫化氢的部分氧化生产氢、硫磺、乙烯和丙烯
- In contact with a hot surface, naphtha petroleum fractions crack to produce ethylene and propylene 石脑油馏份与一个热表面接角,就裂解而得到乙烯和丙烯。
- Study on Copolymerization of Ethylene and Propylene with Ziegler - Natta Catalysts Ziegler-Natta高效催化剂共聚性能研究
- Ethylene and propylene 乙烯和丙烯
- Our business segments include Propylene Oxide and related products, Ethylene and derivatives / co-products, Inorganic Chemicals and Refining. 业务范围及产品包括环氧丙烷及其衍生物,乙稀及其衍生物,无机化学和炼油等。
- Butane and butylenes has the same characteristic with propane and propylene. 丁烯与丁烷表现出与丙烯、丙烷相似的特性。
- Trace water in the initiator system is an important factor which affects the initiating terminal group structure and the performance of the random copolymer of ethylene oxide and propylene oxide. 引发体系中的微量水分是影响环氧乙烷环氧丙烷无规聚醚起始端基结构,并进一步影响其分子量和使用性能的重要因素。
- I hit him fair and square on the jaw. 我不偏不倚打中他的下巴。
- It is a fact of life and you must face it. 这是严酷的现实,你必须面对它。