1·In 197o, researchers at Corning Glass Works were able to produce a kilometer-long ultrapure optical fiber.
1970年，康宁玻璃厂的研究者们能生产出了光可以穿行1千米的超纯光纤。
2·The RASIRC Steamer produces ultrapure steam by boiling de-ionized water, which is inexpensive and widely available.
RASIRC汽轮机的生产超纯蒸汽煮沸去离子水，这是价格低廉，广为散发。