plane spar

例句：

1. 1.The plane was built with the finest plane spar from Japan.
   这架飞机是用日本最好的飞机用材建造的。
2. 2.The pilot used plane spar to reinforce the fuselage during the crash landing.
   飞行员在坠机着陆时使用了飞机用材来加固机身。
3. 3. The construction of the new airport required extensive use of plane spar for structural support.
   新机场的建设需要大量使用飞机用材作为结构支撑。