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足迹化学提取法
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足迹化学提取法
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chemical extraction
足迹化学提取法
利用足迹中的物质成分与相关化学试剂中某些成分相互作用原理,产生化学反应生成有颜色的化合物或荧光物质,使得痕迹显色,增强与承痕客体表面的颜色反差,从而显现足迹的痕迹形态,再利用照相法对足迹等痕迹进行拍照固定的提取方法。
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aircraft noise reduction
Aircraft noise tests in wind tunnel
aircraft nose
aircraft outdoor static infrared radiation signature measurement
aircraft outdoor static radar cross section measurement
aircraft oxygen breathing system test
aircraft part assembly
aircraft patrol
aircraft performance test of radar absorbing material
aircraft physical mock-up
aircraft piston engine
aircraft pneumatic actuation system
aircraft pod structure
aircraft poststall control
aircraft power distribution system
aircraft powered effect test in wind tunnel
aircraft powerplant
aircraft preliminary system safety assessment
aircraft pressure test in wind tunnel
aircraft prognostics and health management system
aircraft propeller structure
aircraft propulsion system
aircraft propulsion system test
aircraft radome structure
aircraft range
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