您要查找的是不是：
- Sheets of postage stamps are perforated. 一张张的邮票都打过接缝孔。
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- The target was perforated by bullets. 靶子上全是子弹打穿的孔。
- Having no opening; not perforated. 不开口的，不穿孔的
- The beautiful curtain is made of remnant materials. 这个漂亮的窗帘是用零头布做的。
- Some synthetic materials do not crush easily. 有些化纤衣料不易起皱。
- Everything we used was made from natural materials. 我们所用的一切都是由天然材料做成的。
- He buys the materials wholesale. 他成批地购买原材料。
- He is collecting materials for a book. 他正在为写书搜集素材。
- A corrugated or perforated conducting plate in a storage battery. 极板网栅，蓄电池电极板蓄电池中呈波纹状或有孔的导电板
- Building materials are expensive. 建筑材料很昂贵。
- In perforated continuous forms paper, the interval between cuts. 在穿孔的连续格式纸上，割线之间的间距。
- A bin for storing ore, grain, or other materials. 仓库储放矿石、谷物或其它材料的大箱
- He is gathering materials for a new book. 他正在收集资料准备写一本新书。
- Gradient Constitutive Relation of Non-homogeneous Perforated Material 非均匀分布孔洞材料的梯度本构关系
- Environmentalists are keen on degradable materials. 环保分子特别喜爱能够自然分解的材料。
- Recycled materials are mostly of limited use. 再生材料大多用途有限。
- All the raw materials are imported. 所有原料都是进口的。
- A perforated nozzle for spraying water from a hose or sprinkling can. 莲蓬式喷嘴一种使水从管子或喷水壶里喷洒出来的有孔的喷嘴
- The broken ribs perforated into his lung. 折断的肋骨刺穿了他的肺。
