One technique to test composite material takes advantage of heat transfer: inspectors place large heaters next to a section of the plane.
测试复合材料的一项技术主要依靠热传递实现：测试员将一个大型加热器放在飞机受测试部分的旁边。
The central body of the plane is made entirely of carbon composite material, which makes the plane lighter and more fuel efficient.
机身主体全部由碳合成材料制成，因此重量更轻，更加省油。
Contact problem of compound material plane with cracks under a rigid punch action is studied in the third chapter.
第三章研究了具任意形状裂纹复合材料平面在单压头作用下的接触问题。
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