olive oil is olive-pomace oil and water directly to a natural separation of post-cold fruit oils, without chemical treatment.
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High quality hard metal can be prepared by simple breaking and grinding from hard metal scrap without any chemical treatment.
采用该法，只须采用破碎和细磨，不经任何化学处理，就能高质量地回收利用废硬质合金。
Ultrafiltration is a technology for waste water treatment without the addition of chemical reagents.
超滤是一种不加化学药剂的废水处理技术。
The passivation process defined in 3.1.1.2 will occur without further chemical treatment, but may be augmented and improved by the post-cleaning treatments defined in 3.1.1.3.
钝化过程（在3.1.1.2说明）在没有进一步的化学处理情况下也会发生，但钝化作用将会被“后清洗处理”（在3.1.1.3说明）提高增强。
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