External vacuum seal welds should be full penetration.

外部真空焊接须焊透.

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High brightness, full penetration rate; Used for bottom diffusion of backlit under LCD.

辉度高, 全透过率高; 用于LCD背光源下扩散.

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All welds for nozzles and manways shall be full penetration through the vessel wall.

接管和人孔的焊缝应为穿过容器壁的全熔透.

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High brightness, full penetration rate; Used for top diffusion of backlit under LCD.

辉度高, 全透过率高; 用于LCD背光源上扩散.

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