Door stops and hinges shall be secured with stainless steel, pin-in-head Torx machine screws into threaded brass inserts.
门挡和合叶应该采用不锈钢钉入式梅花机制螺丝加固在螺纹黄铜嵌入件内。
Latch track shall be attached to door by machine screws into factory installed threaded brass inserts.
门插销轨道应该采用机械螺丝固定在门上工厂预装的螺纹黄铜嵌入件内。
Effect of microelement on the microstructure and wear resistance property of special brass have been investigated by SEM, abrasion machine etc.
利用电子探针、磨损试验机等试验手段，研究了微量元素对特殊黄铜的组织和耐磨性能的影响。
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