All nanometer porous samples have a major peak at 2 . 69ev and a minor one at 3 . 0ev at room temperature , the intensity of luminescence peak declined as the sintering time prolonged 对于纳米多孔碳化硅，所有样品的发光主峰都位于2 . 69ev附近，在3 . 0ev附近处有一肩峰。
2.
Five reflecting light balls were attached to such body parts as an ear , shoulder peak , hip , knee , and ankle , with the main purpose of measuring each angle of joints 在受试者身上黏贴五个反光球，其黏贴位置为耳朵、肩峰、髋部、膝盖及脚踝，反光球主要的目的用以计算各项人体角度。
3.
In the last part , the differential pas technique , which combines the pas technique with the differential spectrum , overcomes the defect from the two techniques , making it has the both advantage of the pas technique , which is suitable for the measurement of the heavy diffusion > opacity sample , and the advantage of the differential spectrum which is capable of differentiating the overlap spectrum and shoulder peak , is present 第三部分提出导数光声光谱技术，将光声光谱技术和导数光谱结合起来，使导数光声光谱技术同时具有光声光谱技术的可适用于强散射，非透明的样品测量和导数光谱可分辨重叠光谱，分辨肩峰的优点，又克服各自的缺点。
