A parallel plate condenser with installation of drying air, lighting and charging is provided, which can keep charge numbers constant in demonstration experiment.
介绍一种具有干燥、照明和充电系统的演示实验装置，该装置使平行板电容器在演示时能保持所带电荷基本不变。
From the viewpoint of control theory, the artificial lighting control strategy was given indirectly under the condition of a given constant illuminance and it could realize the lighting energy saving.
从控制理论的角度，间接给出了恒定照度下人工照明的补偿控制策略，以实现照明节能。
The biggest difference in care overseas vs the US, which has an impact on their health, is the natural raw diet vs kibble, and the exposure to natural lighting vs constant indoor lighting.
在对其健康有重要影响的护理方面，海外与美国的最大区别是天然生食与粗粒食物，以及自然日光与持续的室内照明。
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