optical spectrum analyzersspectroanalysis instrumentspectrographspectrometerspectrum analyzer光谱分析: spectrum analysis; spectral ...仪: appearance; bearingx线光谱分析仪: x-ray quantometer氨脉泽光谱分析仪: ammonia-maserspectrum analyzer波导光谱分析仪: waveguide ectrum analyzer; waveguide spectrum analyzer下载手机词典可随时随地查词查翻译