SPECTabbr.单光子发射计算体层摄影（=single photon emission computed tomography）specabbr.细则；规格(=specification)abbr.投机（=speculation)abbr.特别；特别地（=special/specially)spectrometer detector光谱探测器spectroscopic entropy光谱熵specified sensitivity规定灵敏度speclfic surface area比表面积specifity of catalyst[化] 催化剂的选择性spectroscopical purity光谱纯度Spectroreta hyalodiscan.透窗山钩蛾Speclficial population特定人群spectroscopic parallax分光视差spectrochemical method光化学测定法