查询词典 presser wheel

Ideally suited for sewing two needle fancy and functional seams,specially on closed shoeuppers.Owing to the combination of wheel feed nat driven roller presser,the machine stitches over cross seams with ease.Accurate and uniform setting of stitch es and i

适合于鞋面的车缝及饰缝，特殊综合送，车薄料不土起皱，车厚料缝迹美观，釜座位于针的右方，方便于童鞋及各式鞋类的车蓬，缝目设定精确一致，大小可自由调整，设有操作简便的安全离合器，可减小梭头的损坏，采用球型及针状轴承，配合连杆式天平，磨擦小免保养。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。