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Mark and Kerry have to create a policy about HIV-positive workforce, which results in gossip among the nurses.掺铒玻璃在红外范围内具有高放大效率，使其适用于长距离光纤通信。掺钕玻璃以其宽增益带宽而闻名，可以同时放大多个波长。掺镱玻璃具有高吸收和发射截面，可实现高效放大和
Mark and Kerry have to create a policy about HIV-positive workforce, which results in gossip among the nurses.掺铒玻璃在红外范围内具有高放大效率，使其适用于长距离光纤通信。掺钕玻璃以其宽增益带宽而闻名，可以同时放大多个波长。掺镱玻璃具有高吸收和发射截面，可实现高效放大和