Ni-Cr System solar selective thin solid films were prepared by d.c. magnetron reactivesputtering under the atmosphere of......

为了提高镜面透反射比自动测试仪的检测精度，提出在光电倍增管前添加凹面镜作为收集器，并结合小波分析去噪，及双样品法校准。实验结果......