This wastage can be as high as 70% for gear blanks, and even 90% in the case of aircraft structural parts.
齿轮毛坯材料损耗为70%，而飞机结构零件的材料损耗甚至达90%。
Single structural parts are widely used in the structure of modern aircraft, and this leads to mostly adopt components in aircraft assembly fixtures to locate product joints and process holes.
在现代飞机结构中，整体结构件的应用导致了飞机装配型架结构中大量使用接头和工艺孔定位器。
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