1) natural sett
天然铺石
2) natural bedding
天然铺盖
3) natural stone
天然石,天然宝石
4) natural gypsum
天然石膏
1.
Production practice of substitue desulfogypsum for natural gypsum as retardant;
脱硫石膏代替天然石膏作缓凝剂的生产实践
2.
The results show that though the waste gypsum used independent can affect the setting time and the strength of cement, the waste gypsum mixed with natural gypsum is used as cement eretarder, and the content of SO3 is controlled correctly, the qualified cement can be produced in inherent technology conditions, and the high performance concrete can be made with this cement.
研究结果表明,废石膏作为水泥缓凝剂单独使用时虽然可能会影响水泥的凝结时间和强度,但如果与天然石膏搭配使用,并控制适当的SO3掺量,就可以在原有生产工艺参数基本不变的条件下,生产出合格的水泥,而且可以配制出符合建筑工程要求的高性能混凝土。
5) natural zeolite
天然沸石
1.
Oil recovery enhancing mechanism by natural zeolite and the effect analysis;
天然沸石提高采收率作用机理及效果
2.
Adsorption of cadmium (Ⅱ) in solution by natural zeolite-chitosan adsorbent;
天然沸石负载壳聚糖吸附溶液中镉(Ⅱ)的研究
3.
Removal of arsenic from water by modified natural zeolite and chitosan;
天然沸石负载壳聚糖去除水中砷的研究
6) natural diamond
天然钻石
1.
The objects of the treatment method include mainly the natural diamonds,HTHP synthetic diamonds and chemical vapor deposition(CVD) synthetic diamonds.
该处理方法的对象主要有天然钻石、高温高压合成钻石以及化学气相沉淀法合成钻石。
补充资料：石油天然气国际贸易(见石油市场与天然气市场)
石油天然气国际贸易(见石油市场与天然气市场)
石油天然气国际贸易(internotional tradeof011 and只as)见石油市场与天然气市场。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条