您要查找的是不是：
- cylindrical perforation 星形孔道
- The stone was pecked and ground into cylindrical pestles. 石头被凿开并被磨成一根根圆柱形的杵。
- A sturdy cylindrical container for storing liquids; a barrel. 桶贮存液体的坚固的圆筒状容器; 桶
- A revolving cylindrical sieve used for screening or sizing rock and ore. 滚筒筛一种圆筒形的可旋转的筛，用于岩石和矿石的筛分或大小测量
- 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。
- The weevil is a shiny, cylindrical beetle. 象甲科害虫是一种发光的圆柱形甲虫。
- 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。
- The lathe turns cylindrical shapes. 车床车削出圆柱形。
- This instrument unit is cylindrical. 这个仪器舱是个圆柱体。
- A mark or a perforation indicating canceling. 取消记号表示取削的标记或孔洞
- The cylindrical bacteria are known as bacilli. 圆柱形细菌被称为杆菌。
- The perforation in tectum is clear. 覆盖层不连续,有小穿孔。
- A cylindrical container or object. 圆柱形容器，圆柱形物体
- The perfor mance indexes thereof are tested. 检测了该醇酸树脂的各项性能。
- A usually cylindrical metal container. 金属制的圆柱形容器。
- Mesh sizes 16 and 32 are perforation cartridges. 网孔规格尺寸16和32是穿孔筒。
- A vertical, cylindrical vein of ore. 管状脉直立的管状矿脉
