We mocked up a new type of airplane.
我们制成一种新式飞机的实物大模型。
Al-Li alloys is a new type of material of airplane construction which rises recently. It is famous at its low modulus of elasticity.
铝锂合金为近年来崛起的飞机新型结构材料，它以低弹性模量著称。
Al-Li alloys is a new type of material of airplane construction which rises recently. It is famous at its low modulus of elasticity.
铝锂合金为近年来崛起的飞机新型结构材料，它以低弹性模量著称。
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