serials

A new serials of Er~ ( 3+)/ Yb~ ( 3+) co-doped tellurite-silicate glasses were prepared by the technique of high-temperature melting. The thermal stability, absorption spectra, emission spectra and upconversion spectra were measured and investigated.

用高温熔制法制备了系列Er3+/Yb3+共掺碲硅酸盐玻璃样品，测试和分析了玻璃样品的吸收光谱、荧光光谱、上转换发光光谱及热稳定性。

In China, the main satellites used for forest fire monitoring are NOAA satellites, FY serials meterological satellites and EOS satellites.

目前用于我国森林火灾监测的主要是美国的NOAA系列气象卫星，此外，我国的风云系列气象卫星和美国的EOS卫星也开始应用于林火监测。

They have launched rival taxi-hailing apps and instant messaging services, and compete over everything from restaurant review apps to which US TV serials are shown on video-hosting platforms.

它们推出相互竞争的打车应用和即时通讯服务，并在众多领域角力，从餐厅点评应用，到在它们的视频平台上投放哪些美国电视系列剧。