Some firms did perform better than others, but only relatively so.
某些公司表现确实好于其它公司,但仅仅只是相对而言。
Of course, so called "environment-friendly cosmetics" existed 20 years ago, but the market was relatively small and the products were mostly "green" in package and image only.
当然,所谓的“环保化妆品”20年前就出现了,但那时的市场还较小,产品的“绿色”概念大多只体现在包装和图片方面。
But the composite modification material can not only improve the normal temperature strength of sodium silicate sand but also its collapsibility, so it is a relatively perfect modifier at present.
而作者开发的复合改性剂,既可提高水玻璃砂的常温强度,又可改善水玻璃砂的溃散性,是目前较为理想的改性剂。
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