| Subject | English | Spanish |
| industr., construct., chem. | back tweel | obturador |
| industr., construct., chem. | back tweel | registro de colada |
| industr., construct., chem. | control tweel | compuerta de regulación |
| industr., construct., chem. | front tweel | registro regulador de entrada |
| industr., construct., met. | tweel block | registro |
| industr., construct., met. | tweel block | pantalla |
| industr., construct., met. | tweel block | cortina |
| industr., construct., met. | tweel block | puerta |
| industr., construct., met. | tweel block | pared |