polar bear北极熊
polar coordinate极坐标;极座标;极坐标系统
1.By the dust particle charged theory, the test study on the main technical performance of four types of corona polars is carried, the best polar matching form of horizontal ESP is approached.
运用粉尘粒子荷电原理,对四种电晕极的主要技术性能进行了试验研究,探讨了卧式电除尘器的最佳极配形式。
2.By the dust particle charged theory, the test study on the main technical performance of four types of corona polars is carried, the best polar matching form of horizontal ESP is approached.
运用粉尘粒子荷电原理,对四种电晕极的主要技术性能进行了试验研究,探讨了卧式电除尘器的最佳极配形式。
3.Xie and Bao belonged to the polars of the society in Nan Dynasty respectively, the gentry and the multitude, so the attention to Jian 'an Literature naturally is paid in different aspects.
谢灵运和鲍照分属于南朝社会中士族与素族不同的两极,对于建安文学的关注自然也体现在不同的方面。