Question

求英文专业翻译 急求！关于机械专业的

Several methods of polymerizing ethylene lead to the formation of polyethylene.Polyethylene resins are noted for their good chemical resistnce,low-temperature impact resistance,low coefficient of friction ,good dielectric strength,and flexibility with high flex life,which makes them excellent materials for "living hinges."Low-density polyethylene(LDPE)i flexible and transparent to tranlucent.Uses include squeeze bottles,boil-in packaging,soft gaskets,and ice cube trays.High-density polyethylene(HDPE) is stiffer and moreopaque and is used for pipelines,rigid detergent bottles,wri insulation,garbage pails,and dishpans.Polyethylene terephthalate(PET) is widely used for beverage bottles and is a material that is highly recyclable. A process called blow molding is used to form plastic containers.
Manufacture of polyurethanes generally consists of combining urethane in linkages formed by the reaction of toluene diisocyanate and diphenyl methane diisocyanate.
Polyurethane resins may be either thermosetting or thermoplastic and can be rigid or flexibie,dependingon formulation. Theny have properties of both rubbers and plastics. Foamed flexible polyurethane is used in seat cushions for cars and furniture.Rigid foamed urethane is used as an insulanting material.Urethane rubbery plastices are used for industrial truck solid tires, caster wheels,drive belts,floor coverings,and roofingmaterials.Metal objects such as furniture are sometimes covered with a tough,resilient skin which provides a colorful,damage-resistant surface,while the steel core provides the high strenght .Urethanes may be cast,injection molded,or coated.Synthetic leathers for shoes and handbags are often made of reinforced polyurethanes.

Answer 1

乙烯聚合的几种方法导致聚乙烯形成。聚乙烯树脂是具有良好的化学抵抗集约化、低温抗冲击、低摩擦系数,良好的介电强度、灵活与高弯曲的生活,这使他们选料精良“生活的关键在于。“低密度聚乙烯我灵活和透明以tranlucent。用途包括挤瓶,煮沸包装、软垫圈,冰块底盘。高密度聚乙烯硬度和moreopaque用于管道、严格的洗涤剂瓶、有序绝缘、垃圾水桶,洗碟盘。聚乙烯回顾广泛用于饮料瓶子和材料是一种高度可回收利用的。这个过程称为吹塑是用来形成塑料容器中。
生产聚氨酯通常包括结合形成聚氨酯在连接反应,甲烷苯甲苯二异氰酸酯为原料。
聚氨酯树脂可以是热固性或热塑性,可以僵化或灵活,取决于制定。他们有两者的特性橡胶和塑料。聚氨酯泡沫灵活使用汽车座椅垫子和家具。刚性发泡聚氨酯作为绝缘材料。聚氨酯胶状plastices用于工业卡车坚实的轮胎,施法者轮子,开车带,地面材料,roofingmaterials。金属物品,如家具有时上盖的坚韧,皮肤的弹性提供了丰富多彩,damage-resistant表面,而钢心提供高的力量.Urethanes可能铸造、射出成型,或涂覆。合成皮革因为鞋子和手袋通常是由加强型聚氨酯。

Answer 2

乙烯聚合的几种方法聚乙烯导致形成。聚乙烯树脂是具有良好的化学resistnce集约化、低温抗冲击、低摩擦系数,良好的介电强度、灵活与高弯曲的生活,这使他们选料精良“生活的关键在于。“低密度聚乙烯(LDPE)我灵活和透明以tranlucent。用途包括挤瓶,boil-in包装、软垫圈,冰块底盘。高密度聚乙烯(HDPE)硬度和moreopaque用于管道、严格的洗涤剂瓶、有序绝缘、垃圾水桶,dishpans。聚乙烯回顾(PET)广泛用于饮料瓶子和材料是一种高度可回收利用的。这个过程称为吹塑是用来形成塑料容器中。

生产聚氨酯通常包括结合形成聚氨酯在连接反应,甲烷苯甲苯二异氰酸酯为原料。

聚氨酯树脂可以是热固性或热塑性,可以僵化或flexibie,dependingon制定。Theny有两者的特性橡胶和塑料。聚氨酯泡沫灵活使用汽车座椅垫子和家具。刚性发泡聚氨酯作为insulanting材料。聚氨酯胶状plastices用于工业卡车坚实的轮胎,施法者轮子,开车带,地面材料,roofingmaterials。金属物品,如家具有时上盖的坚韧,皮肤的弹性提供了丰富多彩,damage-resistant表面,而钢心提供高的力量.Urethanes可能铸造、射出成型,或涂覆。合成皮革因为鞋子和手袋通常是由加强型聚氨酯。

Answer 3

乙烯聚合的几种方法聚乙烯导致形成。聚乙烯树脂是具有良好的化学resistnce集约化、低温抗冲击、低摩擦系数,良好的介电强度、灵活与高弯曲的生活,这使他们选料精良“生活的关键在于。“低密度聚乙烯(LDPE)我灵活和透明以tranlucent。用途包括挤瓶,boil-in包装、软垫圈,冰块底盘。高密度聚乙烯(HDPE)如此珍贵,