The paper improves the design of photography system of capturing cross - section image and guarantees the steady capturing of image 對采集斷層圖象的攝像系統(tǒng)進行了改良設計,保證了圖象的穩(wěn)定采集。
Zirconium alloys are employed extensively in light water cooled reactors ( lwr ) as the cladding materials of fuel elements and other structural materials because of the low capture cross - section for thermal neutrons , good resistance to water - side corrosion at elevated temperature , adequate mechanical properties and high thermal conductivity 由于鋯的熱中子吸收截面小,并具有優(yōu)異的耐高溫水腐蝕性能、良好的綜合力學性能和理想的熱導率,因此,鋯合金被用作核電站水冷動力堆核燃料元件的包殼材料和堆芯的其它結構材料。