 |
| Chinese | English |
| 具有内螺纹的接头 | joint for fittings with internal threads |
| 管的内螺纹 | internal pipe thread |
| 输送黏油的内螺纹管 | rifled pipe (约有3米长的螺纹) |
|
| Chinese | English |
| 具有内螺纹的接头 | joint for fittings with internal threads |
| 管的内螺纹 | internal pipe thread |
| 输送黏油的内螺纹管 | rifled pipe (约有3米长的螺纹) |