在过去的50年中，在合成橡胶工业美国French Oil公司已成为世界领先的螺旋压榨机械的供应商。
For the past 50 years French has been the world's leading supplier of mechanical screw presses for the synthetic rubber industry.
异戊二烯是C_5馏分中最具有利用价值的组分之一，在合成橡胶以及精细化工产品的开发利用方面具有广泛的前景。
Isoprene is one of the most valuable components in the C_5 fractions, which has wide prospect in development and utilization of synthetic rubber and fine chemicals.
在我们决定设计之前，就选择了合成橡胶这种材料。
We chose the material [neoprene] before knowing what the design was going to be.
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