大径 meaning in Chinese

major diameter

Studies on key techniques for culturing fine large timber of poplar in flood land
江河滩地优质大径杨木培育关键技术研究
Construction technology for foundation of bored pile with extradeep hole and major diameter , of tianzhuangtai bridge
田庄台大桥超深大径钻孔灌注桩基础施工工艺
Ductile iron is used instead of copper - alloy as material of big - diameter rings . developed with proper production processes , the product can completely meet the demands of its users with its life prolonged and the cost greatly decreased
探讨了用球墨铸铁取代铜基合金作为大径同步器齿环的材料.采用适当的生产工艺，生产出来的产品完全能够满足使用要求，并达到提高使用寿命，大幅度降低成本的目的