|
CN106431358A
|
|
Chromium-doped piezoelectric nano material
|
|
CN106431359A
|
|
Preparation process of piezoelectric nano material
|
|
CN106441647A
|
|
Binding force detection device
|
|
CN106300047A
|
|
One prevents circuit pull-out type power distribution cabinet
|
|
CN106276037A
|
|
Conveying mechanism based on protection sheet material
|
|
CN105950975A
|
|
Preparation process of high-strength ultrawear resisting steel for petroleum drill bit
|
|
CN105950976A
|
|
Preparation method of steel for petroleum sleeve with excellent comprehensive performance
|
|
CN106190083A
|
|
The preparation method of petroleum crude oil thinner
|
|
CN105950128A
|
|
Viscosity reducer of petroleum crude oil
|
|
CN105950977A
|
|
Metal base material for petroleum sleeve
|
|
CN105950978A
|
|
Preparation method of petroleum sleeve steel product suitable for shearing and butt welding
|
|
CN105952970A
|
|
Petroleum pipeline support with adjustment function
|
|
CN105952388A
|
|
Heavy oil horizontal well completion pipe string realizing subsection mining
|
