摘要
应用软Ｘ射线仪对湿地松等２０个树种种子进行衬比造影和直接造影技术研究，找出了各树种种子不同焦片片距（３００ｍｍ和２００ｍｍ）不同感光材料（Ｘ光胶片、普通胶片、相纸）的最适电压、电流和曝光时间，以及最适衬比剂、衬比浓度和衬比时间．
This paper deals with the techniques of radiographing Pinus elliottii and other 19 tree species seeds in a contrast as well as a direct way by applying a soft X-ray apparatus.The optimum radiographic voltage, electric current, exposture time, contrast materials, contrast concentration and contrast time for each tree species seed have been found out along with different film distance and different photosensitive materials.
出处
《中南林学院学报》
CSCD
1996年第4期39-46,共8页
Journal of Central South Forestry University
关键词
林木
种子
软X射线
造影技术
tree seed
soft X-ray
radiographic techniques
contrast radiography
