maintenance free | |
bridg.constr. | 无需养护 |
exhib. | 免维修 |
oil | 不需维修的 |
maintenance-free | |
archit. | 无需维护 |
avia. | 不需维修的; 无维修的 |
busin. | 无须维护的 |
tech. | 不需维护; 不需养护的 |
bearing | |
hydroel.st. | 轴承 |
maintenance-free: 29 phrases in 16 subjects |
Accumulators | 1 |
Architecture | 1 |
Automobiles | 2 |
Aviation | 2 |
Business | 1 |
Chemistry | 1 |
Economy | 1 |
Electric machinery | 2 |
Electronics | 1 |
Hydroelectric power stations | 1 |
International trade | 2 |
Metallurgy | 1 |
Plastics | 1 |
Space | 2 |
Technology | 9 |
Textile industry | 1 |