We're always behind this metal and glass. 我们总是在这层金属和玻璃之后。
The analyses on microstructure of deposited metals were made, and the effect of alloy elements on the microstructure of deposited metal was discussed. 对获得的不同堆焊金属的显微组织进行了分析，并讨论了合金元素对堆焊层金属显微组织的影响。
