斯温说，在太阳系以外，只有四个行星的大气层被光谱分光镜技术(一个化学分析技术)仔细观察和研究，还有32个曾被观察到。
Swain says just four extrasolar planets' atmospheres have been studied in detail with spectroscopy, a chemical analysis technique. Another 32 or so have been observed.
从化学计量学角度研究了近红外光谱技术测定儿童高钙奶粉理化指标的原理。
The principle of determining parameters of children high calcium milk powder (CHCMP) by near infrared spectra method is studied.
用扫描电子显微镜（SEM）、紫外可见光谱和电化学技术对组装过程进行了表征。
SEM, UV-vis spectroscopy and electrochemical techniques were used for characterization of assembly process.
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