| |||
T-bend | |||
| |||
fork shaped tee | |||
| |||
L-pattern three way | |||
| |||
Y-branch |
形三通 : 24 phrases in 11 subjects |
Architecture | 1 |
Electronics | 4 |
General | 1 |
Hydroelectric power stations | 3 |
Metallurgy | 1 |
Nautical | 1 |
Oil / petroleum | 1 |
Plastics | 2 |
Refrigeration | 2 |
Shipbuilding | 1 |
Technology | 7 |