您要查找的是不是：
- reinforeement protective cover 钢筋保护层
- A decorative or protective covering or cover. 罩子一个装饰性或保护性的罩或盖
- A thick protective cover similar to or suggestive of a quilt. 被状物与被子相似的或使人能联想到被子的一种厚实的保护性遮盖物
- A protective covering of bony plates or scales. 护身甲壳保护骨盘或介壳的覆盖层
- A clear glass or plastic protective cover for the face of a watch or clock. 水晶面一个覆盖在钟表表面的、起保护作用的透明玻璃或塑料片
- A protective covering for the knee. 护膝用于保护膝盖的覆盖物
- A protective covering for the face or head. 罩，防护罩用于脸或头的保护性覆盖物
- A decorativeor protective covering or cover. 罩子一个装饰性或保护性的罩或盖。
- Glottis epiglottis plays the role of the protective cover. 会厌起着声门的保护盖作用。
- They have a protective cover of bracts and scales from time of intiation. 从开始孕育时，花芽便具有一层由苞片和鳞片构成的保护层。
- A protective covering or sheath. 鞘一种保护性的覆盖物或套
- They have a protective cover of bracts and scales from time of initiation. 从开始孕育时,花芽便具有一层由苞片和鳞片构成的保护层。
- A protective covering for the head. 头盔保护头部的遮盖物
- An ornamental or protective covering for a saddle. 鞍巾，鞍褥（装饰或御寒用的）覆盖马鞍的布巾
- The cap is a protective covering of a plant. 藓帽是一种植物的保护帽。
- A protective covering for the backs of chairs and sofas. 椅背套椅子和沙发背的保护性套子
- This prehistoric animal grew a thick protective covering. 这种史前动物长着一层厚厚的保护性外皮。
- A similar natural protective covering or structure, such as the egg case of a spider. 茧状物类似的自然保护覆盖层或结构，例如蜘蛛的蛋壳
- This prehistoric animalgrew a thick protective covering. 这种史前动物长着一层厚厚的保护性外皮。
- The front cover of the novel has been torn off. 这本小说的封面已被撕掉。
