On the basis of modem training theory and the actual situation of competition in China, this study makes concrete suggestions concerning how to improve microcycle training and adaptive training before competition and warm-up exercises of competition for teenager track and field ath-letes.
根据现代训练学理论和国内田径比赛的实际情况,对如何改进青少年田径运动员赛前的小周期训练、适应性训练和比赛的准备活动提出了具体建议。
A solid bubble-damage neutron detector has been developed based on freon liquid drop-lete suspended in polylamide.
用聚丙烯酰胺作探测固体、氟利昂作探测液体研制了固体气泡损伤探测器.
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