1、 Virtually the wear of diamond segments consists in the wear of diamond particles and matrixes.
刀头的磨损实质即金刚石的磨损与胎体的磨损.
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2、 The effects of four matrixes and five nutrient solutions on the growth of Daphne odora var.
选用4种不同的基质和5种不同的营养液,比较其对金边瑞香生长的影响.
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