“longeron”簡單造句，longeron造句子

One design trait shared by all Aeronca designs, except the Tandem Trainer and military L-3's, was a three longeron fuselage.

The test results from the standard circles with different radii and the industrious application of the stiffening plate of Santana's front longeron were presented.

longeron for railway or tramway locomotives or rolling-stock

Technique Research on welding "H" type longeron;