1) scanning thickness
透照厚度
1.
By comparing the scan pictures made by ~(75) Se radiographic source,~(192) Ir radiographic source and X-ray on steel piates with different thickness,it is proven that the ~(75) Se radiographic sorce is of better tolerance,it is provided that the scanning thickness can be reduced to 4 mm in order to facilitate the radiographic inspection of small-diameter pipes.
利用75Se1、92Ir和X射线对阶梯试块及不同厚度钢板的对比试验,证明了75Se射线源在小径管的透照中具有较好的厚度宽容度,并提出了透照厚度下限降到4 mm左右的依据,以利于薄壁小径管设备的射线检测。
2) Transmission thickness theoretical calculation
透照理论厚度计算
4) thickness of a lens
透镜厚度
5) half-thickness photo
半厚度照片
6) heat penetration
热透入;透热厚度
补充资料：一透都透
1.犹言一通百通。谓一理既明，众理皆可贯通。
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参考词条