M头

对比各种红外光学材料的性能认为，多晶ZnS是综合性能优良的8～14μm长波红外头罩材料，概述了ZnS的制备工艺及其改进。

The properties of various infrared optical materials were compared in this paper . It is considered that polycrystalline ZnS is a 8 ~ 14 μ m wavelength infrared optical material with good synthetical properties . The producting technology of Polycrystalline ZnS and its improvement were alse summarized .

结果表明，将85μm聚丙烯酸酯萃取头置于5mL萃取瓶中，于35℃条件下萃取30min可从样品中捕获到最大量的挥发性成分。

Results indicated the most volatiles could be captured from cured fish powder in 5 milliliter extraction bottle for 30 minutes at 35 ℃ with the 85 μ m polyacrylate ( PA ) fiber .

优化后的HS-SPME-GC-MS（顶空固相微萃取/气相/质谱）实验条件为：采用85μmPAA纤维萃取头，萃取时间30min，萃取温度室温，解吸时间5min。

The experiment conditions for HS-SPME-GC-MS were that the extraction head was 85 μ m PAA fiber extraction head , the extraction time was 30 min , room temperature , and the desorbing time was 5 min. Three kinds of silicone emulsion were analyzed by this method .