用一个单元的斜窄流分级装置，开展了石英单矿物的连续分级试验。
Continuous classification test was made on pure quartz in one unit of tilting narrow up - flow classification equipment.
结论新生儿足跟斜刺法采血有利于提高采血成功率，减少对新生儿足底软组织的损伤，有利于新生儿疾病筛查工作的开展。
Conclusion neonatal blood collection in heel by diagonal puncture method can increase success rate, decrease soft tissue injury in pelma, and conduce to the development of neonatal screening.
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