The natural rubber has been gathered from the sap of plants for centuries.
天然橡胶是几个世纪以来从植物汁液中收集来的。
Natural rubber has been gathered from the sap of plants for centuries.
从植物汁液中收集天然橡胶已经有几个世纪的历史。
Natural rubber has problems, though.
然而，天然橡胶也有缺点。
But even today natural rubber makes up around 14% of car tyres and 27% of lorry tyres.
但是直到今天，制造轿车胎仍然需要约14%的天然橡胶，载重胎是27%。
Synthetic rubber did not have the strength for radials; only natural rubber could provide the required sturdiness.
合成橡胶不具有子午线轮胎的那种强度，只有天然橡胶才具有所需的那种强度。
Because oil is likely to become more costly in the future, natural rubber looks an attractive alternative from an economic point of view as well as an engineering one.
石油在未来可能更加昂贵，所以，从经济及工程角度来看，天然橡胶似乎是不错的选择。
Around a fifth of an average car tyre is therefore made of natural rubber. In an aeroplane tyre that figure can be more than four-fifths.
因此，一个普通车胎含有约1/5天然橡胶，而一个飞机轮胎中则超过4/5。
Today nearly 50% of every auto tire and 100% of all aircraft tires are made of natural rubber.
目前，每一个汽车轮胎用近50%的天然橡胶制成，所有飞机轮胎都是用100%的天然橡胶制成的。
This process reduces the surface tackiness of the natural rubber latex, making the gloves easier to don because they slide over hands without sticking to the skin.
这一过程削弱了(手套内侧)天然橡胶表面的粘着性，(也因为其能)使得手套能在手上滑脱而不是粘在皮肤上，能易于穿戴。
Polyurethane film handily outperforms many other common polymers when it comes to abrasion resistance. Five times more resistant than natural rubber, the material is of choice of wear products.
聚氨酯薄膜的耐磨性胜过许多其他常见的聚合物。较天然橡胶耐磨五倍以上，是耐磨制品的首选材料之一。
Synthetic rubber has substituted natural rubber in many fields.
合成橡胶在许多领域取代了天然橡胶。
Because of the geographical position, our natural rubber productivity is limited, and the increment of natural rubber demand in our country will be supplied by increasing import in future.
因为地理位置的原因，我国的天然橡胶产能受限，未来我国天然橡胶的需求增量要靠增加进口来补充。
The insulating layer is pure natural rubber, copper wire for copper, so, in order to ensure the safety of wire and cable of good conductivity.
绝缘层一般为纯天然橡胶，铜丝为无氧铜，这样，才能保证线芯的良好导电性及电缆的安全性。
The research team discovered a by-product of the oil refining process called cyclopentene. This was combined with a polymer to make a substance very similar to natural rubber.
该研究小组发现石油炼制过程中有一种名为环戊烯的副产品，它和某种聚合物结合后能生成一种非常类似于天然橡胶的物质。
Natural rubber is one of the four main rural materials for industry.
天然橡胶为四大工业原料之一，也是极为重要的战略物资。
Calibration curve of natural rubber was obtained by using polystyrene standard and universal calibration methods.
天然胶的校正曲线是以标准聚苯乙烯和普用校正法获得的。
The problem whether natural rubber is a polymer with linear chain molecules has been solved.
天然橡胶是否是线型链状分子的聚合物，这个问题已经解决了。
These insulating gloves are made of natural rubber.
这种绝缘手套是由天然橡胶制成的。
Our furniture is made mainly out of natural rubber, wood, veneer and palm wood.
我们的家具的原材料主要是由天然橡胶，木材，胶合板和棕榈木组成。
Factory was established in 2005, is a specialized production and marketing of natural rubber products business.
本厂成立于2005年，是一家专门生产销售天然橡胶制品的企业。
Examples of homopolymers are natural rubber, whose monomer is isoprene, and polyethylene, whose monomer is ethylene.
均聚物的例子有单体为异戊二烯的天然橡胶以及单体为乙烯的聚乙烯。
It has a better flex cracking resistance than those of natural rubber but a lower tear strength and a higher dynamic modulus.
它比天然橡胶具有较好的抗挠曲开裂性能，但撕裂强度较低，动态模量较高。
The influences of different mixing methods and adhesive systems onthe short fibers reinforced natural rubber are mainly dealt with.
本文重点研究了不同混炼方法、不同粘合体系对不同短纤维补强天然橡胶的影响。
The properties of the blends of 1,2-polybutadiene ( PB ) and natural rubber ( NR ) at equal loading were studied.
本工作研究了1，2-聚丁二烯（PB）与天然橡胶（NR）等量并用的共混胶的性能。
This is because they have a quiet similar microstructure, so isoprene rubber has the same excellent combination properties with natural rubber in performance.
这是因为它们有着十分相似的微观结构，因此异戊橡胶在性能上与天然橡胶有着一样的优异综合性能。
Lowering the cost and improving the quality is the key to increase the market competitiveness of natural rubber products.
降低成本、提高质量是增强天然橡胶产品市场竞争力的关键。
This Paper has analysed the present situation of the production , consumption , yield predicting , price and new utilization of natural rubber in the world.
本文就当前世界天然橡胶的产量，主产国产量的预测，消费动向，胶价走势及胶树用途的拓展作些简介。
It can be divided into natural rubber and synthetic rubber according to the source of raw materials.
根据原材料的来源不同，它能分为天然橡胶和合成橡胶两类。
It can be divided into natural rubber and synthetic rubber according to the source of raw materials.
根据原材料的来源不同，它能分为天然橡胶和合成橡胶两类。
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