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1.The photometric system was used to measure the intensity of light.
使用光度计系统来测量光线的强度。
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2.The photometric system is essential for accurate measurements.
光度计系统对于准确的测量至关重要。
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3.The photometric system was designed to be user-friendly and easy to use.
光度计系统设计得用户友好且易于使用。