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- Only vessels were observed in Selaginella sanguinolenta and Selaginella pulvinata, including two types of scalariform perforation plates and reticulate-scalariform perforation plates. 圆枝卷柏、垫状卷柏仅观察到导管，有梯状穿孔以及网状-梯状混合型穿孔2种类型。
- Scalariform perforation plates; 4梯状穿孔；
- scalariform perforation 梯状穿孔
- scalariform perforation plate 梯状穿孔板
- There were two types of vessel perforation plates, simple perforation one and scalariform plant. 一端是梯状穿孔板,另一端为孔纹增厚的导管;
- A perforation,as in a punched card or paper tape. 在穿孔卡片或纸带上穿孔的一种动作。
- A perforation, as in a punched card or paper tape. 在穿孔卡片或纸带上穿孔的一种动作。
- An ornament inserted into a perforation in the lip. 唇饰穿在唇上的孔里的一种饰物
- This prevents bowel perforation. 这样可以防止肠道穿孔。
- The acute Perforation has developed. 发生急性穿孔。
- A mark or a perforation indicating canceling. 取消记号表示取削的标记或孔洞
- The perforation in tectum is clear. 覆盖层不连续,有小穿孔。
- The perfor mance indexes thereof are tested. 检测了该醇酸树脂的各项性能。
- Mesh sizes 16 and 32 are perforation cartridges. 网孔规格尺寸16和32是穿孔筒。
- No bleeding, perforation or septicemia occurred. 未发生出血、穿孔、败血症。
- A separation of continuous paper forms, usually at the perforation. 通常在穿孔处对连续格式纸进行的分离。
- No water is entering through the deeper perforation. 更深处的射孔则没有水进入。
- A separation of continuous paper forms,usually at the perforation. 通常在穿孔处对连续格式纸进行的分离。
- Excessive pressure can lead to perforation of the stomach wall. 过大的压力会导致胃壁穿孔。
- Perforation: Adequate numbers providers for air escape. 打孔:袋子需打适当数目的孔供出气。
