1)  heavy metals
天然彩棉纤维
1.
But as a kind of farm crop, the colored cotton it would absorb some harmful heavy metals from the air, water, soil in the growth p.
天然彩棉纤维是一种最主要的生态纤维品种，它色泽自然，古朴典雅，质地柔软，富有弹性，穿着舒适。
2)  natural
天然
1.
Process on green corrosion inhibitors picking from natural propagation;
从天然动植物中提取绿色缓蚀剂的研究进展
2.
Study on the refining technology of natural caffeine;
天然咖啡因精制工艺研究
3)  nature
天然
1.
The Activity and Their Mark of Nature and Synthetic Vitamin;
天然维生素和合成维生素的活性与标识
2.
To explore brightening effect of nature product.
筛选具有增白作用的天然产物 ,为美白化妆品的开发提供了依据。
3.
The article analyzes the affecting factors of nature moisture content by taking project as an example.
通过工程实例的体会,对天然含水量指标的影响因素进行了理论分析。
4)  natural pigment
天然色素
1.
Research on dyeing effect of wool fiber with natural pigment in supercritical carbon dioxide;
天然色素在超临界CO_2中对毛纤维染色性能的研究
2.
Purification and research progress on the natural pigment;
食用天然色素的纯化与研究进展
3.
A novel equipment for extracting natural pigments:chute extractor;
新型天然色素提取设备——滑槽式浸出器
5)  natural rubber
天然橡胶
1.
Influence of amount of sulfur on crosslinking density and structure of natural rubber characterized by nuclear magnetic resonance spectroscopy;
核磁共振法表征硫黄用量对天然橡胶交联密度及结构的影响
2.
Co-cure of natural rubber/ethylene propylene diene monomer blends by organic peroxide system;
过氧化物体系中天然橡胶/三元乙丙橡胶并用胶的共硫化
3.
Effect of dynamic tensile fatigue on structure and dynamic viscoelasticity of unfilled natural rubber vulcanizates;
动态疲劳对未填充天然橡胶硫化胶结构与动态黏弹性的影响
6)  gas
天然气
1.
Supply and demand analysis for world petroleum industry and Chinese natural gas;
世界石油工业和中国天然气供需分析
2.
Comprehensive evaluation method for sealing ability of mudstone caprock to gas in each phase;
泥岩盖层对各种相态天然气封闭能力综合评价方法
3.
Division of seal evolution stages of shale caprocks to gas in each phase and its research significance;
泥岩盖层对各种相态天然气封闭性演化阶段划分及意义
参考词条
补充资料：酚醛棉纤维模塑料
分子式：
CAS号：

性质：苯酚、甲醛以氨为催化剂制成液态树脂，加入添加剂后，再按一定比例浸渍棉纤维，经捏合、风干、烘干而成，用于制作冲击强度高的电工绝缘零件及机械零件。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。