A.原片玻璃厚度≤4mm,接觸時(shí)間3min B.原片玻璃厚度6,接觸時(shí)間5min C.原片玻璃厚度8,接觸時(shí)間7min D.原片玻璃厚度≥10mm,接觸時(shí)間9min
A.溫度為273K B.濕度50% C.壓力為101.3kPA D.空氣密度1.202kg/m3
A.氣密 B.水密 C.抗風(fēng)壓 D.保溫