Compared with tradition design, the optimum design can contribute to reduce volume and save material.
与传统设计方法相比,这种分配齿轮系统优化设计方法可以减轻齿轮的体积、节省材料。
In modern metal process, in order to save material and improve its property, wire or rod are often processed by drawing.
在现代的金属工艺中,为节约材料和提高材料性能,对线材或棒材等长材经常采用拉拔工艺进行加工。
This way of storing can not only save material but also have many other advantages, such as easy to locate books and classifying books to make them trimly.
这种全新的存储方式不但节省材料、而且具有相当多的优势,便于准确定位、分类存储、快速查找和整齐摆放,使书籍的存储和使用更有条理和娱乐性。
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