“白铜”造句
2024年06月27日 05:04:10
刀柄装饰精美, 有
白铜镶花,有黄铜缀杂, 有乌金银亮, 有碧玉晶莹.
Knife handle beautifully decorated, Cupronickel Xianghua , is up of miscellaneous brass, gold and silver - Ukraine, jasper crystal.
研究了真空熔铸法制备的锰
白铜基铸造碳化铬复合材料的二体磨料磨损机理.
The abrasion wear mechanism of Mn copper - nickel alloy matrix - cast chromium carbide composite was studied.