Grinding efficiency high. Sand consumption is low, a good finish grinding parts o the abrasive shell-like fracture surface, moderate hardness, good toughness, sharp edges can be formed continuously graded crushed corners and edges of new edge to make it better than other abrasive grinding o it has a high hardness. than significant. chemical stability and its unique since sharpadvantages, it has the other abrasives, synthetic abrasives are irreplaceable advantages, as grinding, polishing glass. monocrystalline silicon is an ideal material;
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It is significant that girls generally do better in examinations than boys.
很明显，女生的考试成绩一般比男生的好。
What the proxy records make abundantly clear is that there have been significant natural changes in the climate over timescales longer than a few thousand years.
代理记录充分表明的是，气候在比几千年更长的时间跨度内发生了重大的自然变化。
Probably the most significant finding from research on noise is that its predictability is more important than how loud it is.
也许对噪音的研究中最重要的发现是，噪音的可预测性比噪音的大小更重要。
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