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文章讨论了12名对尘埃中螨过敏．患有轻、中度哮喘的平原儿童逗留在1756m高原无螨环境期间，每日的呼气高峰流速变化（％PEF）以及支气管对乙酸甲胆碱（PC20）过敏（BHR）之间的关系。他们从10～12月底居住在高原，然后回平原住三周，于一月下旬重返高原。在高原3个月和重返高?
The article discussed 12 allergies to dust mites. The relationship between daily changes in peak expiratory flow rate (% PEF) and bronchial sensitivity to methacholine (PC20) allergy (BHR) during placental children with mild to moderate asthma at 1756 m altitude without mites. They lived in the plateau from the end of October to the end of December and returned to the plains for three weeks before returning to the plateau in late January. 3 months in the plateau and return to high?