Digital hard disk video recorder system has been playing an important role in various application regions. Record function module is its core.
数字硬盘录像系统在各个应用领域发挥着重要的作用，录像功能模块是其核心部分。
A hard rubber disk used in ice hockey as the playing and scoring medium.
冰上曲棍球比赛中，球员在冰上周旋，用球杆把球击入球门。
A hard rubber disk used in ice hockey as the playing and scoring medium.
冰上曲棍球比赛中，球员在冰上周旋，用球杆把球击入球门。
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