Used to produce single, double and multiple corrugated carton.
适应单、双多层瓦楞纸箱生产。
METHODS: The trial design was randomized, double blind, double modeling and multiple center.
方法：采用随机、对照、双盲、双模拟、多中心试验设计方法。
The bearings are classified by elements as single row, double row and multiple row bearings.
根据滚动体排列情况，可以把这类轴承划分为单列、双列和多列。
The bearings are classified by elements as single row, double row and multiple row bearings.
根据滚动体排列情况，可以把这类轴承划分为单列、双列和多列。
应用推荐