1·What the prospectors found at Mountain Pass was an igneous ore containing mainly carbonate, sulphate and silicate phases.
勘矿工人们在帕斯山发现的矿石标本是火山熔岩，其主要成分是碳酸盐、硫酸盐和硅酸盐。
2·Natural sulphate particles in the upper atmosphere lowered global temperatures by 0.5 degrees Celsius in less than a year following the eruption of Mount Pinatubo in the Philippines in 1991.
1991年，菲律宾的品纳士玻火山爆发不到一年，上层大气中的自然硫酸盐微粒就使全球气温降低了0.5摄氏度。
3·If it were engineered by intentionally putting sulphate into the stratosphere they would judge it to be deliberate.
如果将硫酸盐放入到对流层，他们就可能认为这是蓄意行为。
4·Sulphate particles, meanwhile, survive only a few years in the atmosphere.
而硫酸盐微粒方案只能在短暂的几年内有效。
5·Chemical wood pulp, soda or sulphate, other than dissolving grades.
碱木浆或硫酸盐木浆，但溶解级的除外。