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1. The threshold wavelength for thismaterial is 650 nm.
这种材料的阈值波长为650纳米。
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2.The researchers found that the threshold wavelength fordetecting the virus was around 380 nm.
研究人员发现，检测该病毒的阈值波长约为380纳米。
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3.In the study, the researchers useda laser to measure the threshold wavelength ofthe material.
在这项研究中，研究人员使用激光测量了该材料阈值波长。