raw natural rubber

基本解释

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。
Because the natural high molecular rubber powder, i. e. the starch is adopted as raw materials, the raw materials have wide sources, can replace the expensive import materials, and have low cost.
由于采用了天然高分子胶粉即淀粉为原料，其原料来源很丰富，可替代昂贵的进口材料，成本低。
ip.com
Basing on ISO/OSI reference model and project of "The development of automation system for raw natural rubber", the paper takes the example of display module and design PROFIBUS-DP intelligent slave.
本文依据ISO／OSI开放互连模型，以“天然生胶生产的绉片、锤磨控制系统的研发”项目为依托，以数据显示单元为例设计了PROFIBUS-DP的智能从站单元。

The company, which currently gets most of its rubber from a plantation in Liberia, is also exploring other natural materials for producing the raw material for tires, including Russian dandelions and a native Southeast bush called guayule.
FORBES: How Bridgestone's Innovative New Tires Will Save You Fuel