1) interference diagram
叶片的频谱图
2) resonant frequency of impeller blades
叶片的共振频率
1.
The resonant frequency of impeller blades in an APU load compressor is a target index necessary to be controlled in the process of impeller maintenance.
APU负载压气机叶轮叶片的共振频率是维修叶轮过程中需要控制的一项指标。
2.
Error analyses of measuring method on resonant frequency of impeller blades;
辅助动力装置负载压气机叶轮叶片的共振频率是维修叶轮过程中需要控制的一项指标。
3) leaf spectra
叶片光谱
1.
The leaf spectra and SPAD values of rice (Shengdao 13 and Yangguang 200) at in booting stage are determined by using spectroradiometer and chlorophyll meter through field test in this paper.
利用光谱仪和叶绿素计,通过田间试验,测量了孕穗期不同SO2熏气浓度下水稻(圣稻13、阳光200)叶片光谱和SPAD值,在此基础上分析了水稻叶片吸收光谱特性,及其一阶导数光谱特征。
2.
For instance,at 400-1 250 nm,the negative relationships between SPAD,chlorophyll and leaf spectral reflectance were evident;at 720-1 000 nm and 1 450-1 500 nm,the positive relationship between leaf water content(LWC) and leaf spectral transmission was remarkable;at 400-650 nm,the relationships between chlorophyll(CHL),SPAD,carrot(CAR) and leaf spectral absorption were positive.
结果表明:在400~1 250 nm波段,叶片光谱反射率与SPAD、CHL呈显著负相关;在720~1 000 nm和1 450~1 500 nm波段,叶片光谱透射率与LWC间呈显著正相关;在400~650 nm波段,叶片光谱吸收率与CHL、SPAD和CAR呈显著正相关;分别构建了以NDVI、NDWI、GreenNDVI和NRI为自变量、叶片营养为因变量的光谱诊断模型,经检验,模型预测性较好,尤其利用NDWI(860,1 240)诊断LWC具有相对最大R2、最小RMSE和最小RE,表明此模型预测能力最强。
4) static frequency of blade
叶片静频
5) frequency modulation blade
调频叶片
1.
The operation reliability of the frequency modulation blades of th e turbine has a relation to the safety operation of the turbine.
汽轮机调频叶片工作的可靠性直接关系到汽轮机的安全运行,介绍了ACS4。
补充资料：共振频率
分子式：
CAS号：
性质：在量子力学系统中，引起产生共振吸收所需的入射辐射的频率。
CAS号：
性质：在量子力学系统中，引起产生共振吸收所需的入射辐射的频率。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条