采用本发明的催化剂可获得较高的烃类转化率和乙烯丙烯单程收率。
After the catalyst is adopted, high conversion rate of hydrocarbon and high once through yield of ethylene and propylene can be achieved.
塑料止品。苯乙烯丙烯腈模制和挤制材料。第1部分：规范用标识系统和基础。
Plastics. Styrene acrylonitrile moulding and extrusion materials. Part 1: designation system and basis for specifications.
它介绍了丙烯酸、丙烯酸脂、苯乙烯四元共聚合成醇溶性聚丙烯酸脂类的方法。
It introduces how to synthesize acrylic acid, acrylate and phenylethene quadripolymer into alcohol-soluble acrylic resin.
N-异丙基丙烯酰胺与聚乙烯醇的质量百分比分别为5％和25％。
The N-isopropylacrylamide and the polyvinyl alcohol are respectively 5 percent and 25percent by weight percent.
问题在于这种用乙烷制作乙烯的生产流程几乎不会伴有丙烯产生。
The trouble is that the ethane route to making ethylene produces virtually no propylene.
聚丙烯来自丙烯，而丙烯又是生产乙烯（一种特殊用途的碳氢化合物）所使用特殊工艺的副产物。
Polypropylene is derived from propylene, which is in turn a by-product of a specific way of producing ethylene, a particularly useful hydrocarbon.
十年前，北美的大多数乙烯是石油脑(一种石油衍生物)所制：其生产过程所产生的副产物正是丙烯。
A decade ago most ethylene in North America was made using naphtha, an oil derivative: it is this process that has propylene as its by-product.
同组化学物质(如丙烯酰胺和甲乙烯酮)也存在于汽车尾气、二手烟、工业环境中，甚至炸薯条里也有。
Chemicals in this group, such as acrylamide and methylvinyl ketone, also show up in car exhaust, cigarette smoke, industrial Settings, even French fries.
乐高积木始于小颗粒状的丙烯腈丁二烯苯乙烯(abs)，一种闪亮的可以被用于制造从硬帽子到水管的塑料。
LEGO bricks start out as granulated acrylonitrile butadiene styrene (ABS), a type of shiny plastic used to make everything from hard hats to toys to pipes.
烯烃主要是来自石油气或大分子的碳氢化合物裂解，如乙烯，丙烯。
The olefins, such as ethylene and propylene, are formed from petroleum gas or from cracking of larger hydrocarbons. Ethylene is used to make polyethylene e.g.
我不太担心聚乙烯(塑料袋的原料)，也不特别担心聚丙烯，用于酸奶瓶和人造黄油桶。
I'm not so worried about polyethylene [the stuff of plastic baggies]. I'm not particularly worried about polypropylene, which is the stuff that's used in yogurt containers or margarine tubs.
在石油化学工业中所用的许多原料是不饱和烃类，如乙烯、丙烯、丁烯和丁二烯。
Many of the raw materials used in the petrochemical industry are unsaturated hydrocarbons, such as ethylene, propylene, butene and butadiene.
石脑油馏份与一个热表面接角，就裂解而得到乙烯和丙烯。
In contact with a hot surface, naphtha petroleum fractions crack to produce ethylene and propylene.
这家工厂也是一座世界级规模的化工厂，将源源不断地生产成千上万吨聚乙烯、聚丙烯（塑料的基本组成部分）和二甲苯（PX，用于合成聚脂纤维）。
The facility is also a world-scale chemical plant, pumping out thousands of tons of polyethylene and polypropylene, the building blocks of plastic, and paraxylene, which gets turned into polyester.
图2显示了绝对价值的表面能量的固体材料和表面张力的许多塑料包括聚乙烯和聚丙烯往往是不够的粘接或打印。
Fig 2 shows absolute values of surface energy for solid materials and the surface tension of many plastics including polyethylene and polypropylene is often insufficient for bonding or printing.
为了保证低泄漏电流和低介电吸收，反馈电容器应当由合适的介电材料(如聚苯乙烯、聚丙烯或聚四氟乙烯)制成。
To ensure low leakage current and low dielectric absorption, the feed back capacitor should be made of a suitable dielectric material such as poly styrene, polypropylene, or Teflon.
由各种比例苯乙烯、丙烯腈和丁二烯组成的一类热塑性合成共聚物。
A type of thermoplastic synthetic copolymer composed of various proportions of styrene, acrylonitrile and butadiene.
甲醇油除作发动机燃料外，还可加工转化成乙烯、丙烯替代短缺的石油原料。
The methanol oil (liquid fuel) can be used as engine fuel, and can also be used to produce ethylene and propylene replaced petroleum material.
HLTE管道泵专为聚丙烯和聚乙烯反应炉循环而设计。
HLTE elbow pumps are specifically designed for reactor circulation duties in polypropylene and polyethylene plants.
塑料制品，有很好的耐腐蚀性能，使用也较普遍。品种有聚乙烯、聚丙烯、软聚氯乙烯、聚四氟乙烯、尼龙66、尼龙1010等。
Plastic products, have a good corrosion resistance, the more common use. Varieties are polyethylene, polypropylene, soft PVC, PTFE, nylon 66, nylon, etc. 1010.
芳烃是产量和规模仅次于乙烯、丙烯的重要有机化工原料。
Aromatics hydrocarbon is a very important material for organic chemical industry, whose productivity is only less than ethene and propylene.
可广泛应用于石油裂解气，乙烯，丙烯及天然气的深度干燥。
It can be widely used in petroleum cracking gas, ethylene, propylene and natural gas drying depth.
阀座材料应该是下列材料之一：乙烯-丙烯-二烯系单体或氟橡胶，在顶部和底部配置聚四氟乙烯轴承支撑。
The seat material shall be one of the following materials: ethylene-propylene-diene monomer or fluoroelastomer with polytetrafluoroethylene bearing support at the top and bottom.
在ISBL装置(包括大的不间断流程)上有经验，例如气化，煤处理，气体处理，氨，甲醇，氢，烯烃，硫，聚乙烯，聚丙烯。
Experience for ISBL units could include large continuous processes such as gasification, coal processing, gas processing, ammonia, methanol, hydrogen, olefins, sulphur, polyethylene, polypropylene.
封口材质使用广泛，可以是聚乙烯、聚丙烯、聚苯乙烯、聚酯以及玻璃瓶，但不能用于金属瓶体及瓶盖。
Sealing material is widely used and can be polyethylene, polypropylene, polystyrene, polyester and glass bottles, but can not be used in metal bottles and caps.
通过聚乙烯、聚丙烯分别与木纤维复合制板工艺的实验，探讨了加入助剂和改变聚乙烯、聚丙烯用量对复合材料力学性能的影响。
This paper studies the influence of adding chemical coupling, changing the dosage of polyethylene and polypropylene on mechanical properties of Wood fiber and Plastic Composite (WPC) panel.
EPDM是一种由乙烯-丙烯、二烯单聚物构成的三元共聚物弹性材料。
EPDM is a terpolymer elastomer made from ethylene-propylene diene monomer.
EPDM是一种由乙烯-丙烯、二烯单聚物构成的三元共聚物弹性材料。
EPDM is a terpolymer elastomer made from ethylene-propylene diene monomer.
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