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1·Surface zone: surface zone is relatively constant and more radiopaque than the other zones.

表层：龋损区表面有一较为完整的表层，且较深层有更强放射阻射。

2·Objective To study the possibility of using radiopaque resinifying agent in resinification of the tooth.

雍王嘉德目的为研究显影塑化剂在牙髓塑化治疗的显影效果。

3·For example, some container assemblies of the invention include a body and a lid both including radiopaque material, and together defining a receiving space for radioactive material.

例如，本发明某些容器组件包括本体和盖，均包括射线透不过的材料并一起限定了放射性材料的容纳空间。