The images are partially obscured themselves by a large inflated balloon filling the space between the two walls of the long thin space in which they are installed.
部分作品的图像把它们自己隐藏在充满这个狭窄空间的巨大气球的皮肤下。
The two root canals, root canal diverge and root canal branch et al have considerable incidence. Besides, mesial-distal root canal walls of mandibular incisor teeth are thin.
下颌切牙中，双根管、根管分支和根管分歧都有一定的发生率。
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