spectrum n. (pl. -tra ) 1.【物理学】谱,光谱;波谱;能谱,质谱。 2.【无线电】射频频谱;无线电(信号)频谱。 3.【心理学】(眼睛的)余像;残像。 4.〔转义〕范围,幅度;(连续的)系列。 an absorption spectrum 吸收(光)谱。 a bright line spectrum 线状光谱。 an optical spectrum 光谱。 a solar spectrum 太阳光谱。 a wide spectrum of opinion 意见的不同幅度甚大。
The test must work in a specify rotation spectrum , temperature spectrum and load spectrum to analogize the reality condition 实验器要在一定的载荷谱、温度谱、转速谱条件下工作,模拟轴承的实际工况。
Faraday rotation spectra was measured on samples with model cgx - 1 fr test apparatus by ourselves using the magneto - optical modulated double - frequency method . the development on magneto - optical material and devices , especially on rare - earth ion garnet , were reviewed . as a solution to the problem for temperature stabilized and wideband magneto - optical materials which could satisfy the development of magneto - optical devices for integration and miniaturization , a modified liquid phase epitaxy ( lpe ) technique was brought forward to grow thin film yb3fe5o12 onto substrate ybilg or thin film ybilg onto sustrate ybig 本论文工作包括对ybiig 、 ybig系列石榴石薄膜制备的实验构想、相图分析、制备工艺分析和配方设置,搭建了液相外延设备;比较系统地研究了ybiig 、 ybig系列石榴石薄膜的生长、测试,首次成功制备了ybig ybiig 、 ybiig ybig ggg系列复合膜,并采用xrd 、 sem 、 epma等方法对所得样品进行了结构、组分和微区形貌分析,用紫外可见光光谱仪测试了其在可见近红外波段光吸收。