蓝移(紫移) :生色基吸收峰向短波方向的移动称为紫移或蓝移。 增色效应:使吸收带强度增加的作用称为增色效应 减色效应:使吸收带的强度降低的作用称为减色效应。
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There is a way to practice hard and be physical without pads. You can still be a physical football team and be efficient in practice without pads. The 49ers practiced like that for a long period of time in the 1980s under Bill Walsh and were extremely successful when all the other teams were practicing in pads.