条形码作为自动识别技术的先行者因为其价格便宜，目前在整个物流领域被广泛采用。
Bar code, as the forthgoer of the auto-reorganization, is widely used in all the industries for its low cost.
介绍了一种实用型教学用露点仪，其价格便宜，直观性强，在教学中取得了良好的效果，同时也极大的丰富了大学物理实验中的热力学内容。
A practical dew point hygrometer for teaching use was introduced, which has low price and good teaching effect. Meanwhile, it enormously enrich the content of thermodynamics in the physics experiment.
其容重比板材轻，有良好的回弹性，价格便宜，施工方便。
Its bulk density than plank light, good recovery, cheap price, construction is convenient.
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