gymnastic apparatus
常见例句
- This artical emphasizes on the structure of a simple metal plate style rolling bearing and its concrete producing method at low cost, which is specially designed for the gymnastic apparatus.
文中着重介绍了一种专为健身器械设计的钣式简易滚动轴承结构和低成本制造该轴承的具体方法。 返回 gymnastic apparatus