双圆盘耙路机  double disk harrow

单列圆盘耙  single disk harrow; single-row disc-harrow

并列双圆柱  two side-by-side circular cylinders

串列双圆球绕流  flow past two spheres

串列双圆柱  tandem two cylinders; two circular cylinders in tandem

二维串列双圆柱  2-D tandem twin cylinders

横向排列双圆柱  two side-by-side circular cylinders

双列圆柱滚子轴承  double row cylindrical roller bearing; double row cylindrical roller bearings; double row roller bearing

双列圆锥滚子轴承  automobile hub bearing; double row roller bearing; double row tapered roller bearing

双排式圆盘耙  double-action disc harrow

双圆盘  Bidisk; twin-disk

双圆盘Hardy空间  Hardy space in the bidisc

双圆盘摆线轮行星传动  double-disc cycloid gear

双圆盘电极  Dual disk-shaped electrode; Dual disk-shaped elec-trode

双圆盘粉碎机  twin-disc cutting mill

双圆盘摩擦压力机  double disc friction screw press

双圆盘上的Hardy空间  Hardy space on the bidisk

双圆盘条播开沟器  double disc drill colter

斜置排列双圆柱  two cylinders in staggered arrangement