metal composition

基本解释

The result indicates that Xinmang coins have a strict metal composition and were casted with consummate skill.
研究结果表明，新莽货币有严格的金属配比和精湛的铸造工艺技术。
These planets and their surfaces may be heavily modified by the last, big collision they experience (e.g. the largely metal composition of Mercury or the Moon).
这些行星最近所经历的大碰撞，会改变他们和他们的表面。
Based on a great deal of welding procedure qualification data, the mechanical properties prediction models of welding joints were established according to base-metal composition, filler metal compo.
本文针对实际生产过程中，焊接工艺评定要做大量的工艺评定试验，提出了利用人工神经网络和遗传算法来对焊接接头力学性能预测的方法来改进焊接工艺评定。