目的掌握河北省阳原县地方性氟中毒流行现况。
Objective To investigate the current status of endemic fluorosis in Yangyuan County.
河北阳原法院推出的“试验离婚”实质反映了社会对别居制度的现实需求。
The "trial divorce" put out by Yangyuan Court of Hebei Province in essence reflects the demand for the separation system in real society.
阳原幔源包体包括二辉橄榄岩和方辉橄榄岩，是华北西部上地幔的直接样品。
The xenoliths in the yangyuan, including iherzolite and harzburgite, represent the direct samples from the upper mantle beneath western north China craton.
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