压强梯度场 field of pre ure grade; field of pressure grade
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This clear quartz rod has high purity , elevated temperature characteristics and low coefficient of thermal expansion . it serves as the material of the bridging rod for single and halogen lamps , fiber optic lighting , quartz making , wafer carriers and push rods in semiconductor industry 这种透明石英棒具有纯度高,耐高温性强以及热膨胀系数低的特点,用于单端卤素灯的压桥棒,光纤照明、石英纤维的制造以及半导体硅片的加工等。