1. 极圈：polar cap 极冠 | polar circles 极圈 | polar coordinates 极坐标
1. Are there any animals in the polar circles?
南极圈和北极圈内有动物存在吗？
2. The Geometry of Lie's Circles and the Projective Polar
圆素几何和射影配极
3. When k > 1, the model may be applicable for the latitudes outside the polar circles.
k>1，相当于极圈外各个纬度。
4. My company's products are widely used in clothing, toys, home textiles and other fields, the product has printing | dyed polar fleece, shear wool, single face down, coral velvet, velvet, towel cloth, three-weft cloth clothing series knitted fabric, the product not only best-selling domestic market but also exported to Europe, America and other regions, a good business advice, quality after-sales service is the focus of our work, and quality is the enterprise's survival, reputation is the way the development of enterprises, the company dedicated welcome friends from various circles at home and abroad came to negotiate business, under the premise of mutual benefit with the new and old customers to join hands in creating a better tomorrow.
我公司的产品广泛用于服装、玩具、家纺等领域，产品有印花|染色摇粒绒、剪毛绒、单面绒、珊瑚绒、天鹅绒、毛巾布、三线纬衣布等一系列针织面料，产品不仅畅销国内市场，还远销欧美等地区，良好的业务咨询，优质的售后服务是我们工作的重点，质量是企业的生存之本，信誉是企业的发展之道，公司竭诚欢迎海内外各界朋友前来洽谈业务，在互惠互利的前提下与广大新老客户携手共创美好明天。
polar circles什么意思
5. The problems about two polar circles of quadratic system
判断二次系统存在两个极限环的问题
6. Application and development of vertical electrostatic precipitator of wide polar distance, multiple electric field, assembled pipe and concentric circles
立式宽极距多电场组合管同心圆静电收尘器的应用开发
7. The Geometry of Lie ′ s Circles and the Projective Polar
圆素几何和射影配极