Objective To verify the sea sickness preventing effect of orally taken dry ginger root powder.
目的验证服用干姜粉预防晕船的效果。
It has good screen effect, preventing from strong current disturbing weak current.
具有良好的双屏蔽效果，可防止强电压对弱电压电流信号的干扰。
It has good screen effect, preventing from strong current disturbing weak current.
具有良好的双屏蔽效果，可防止强电压对弱电压电流信号的干扰。
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