硬金属，硬质合金（通常指碳化钨）
1. 硬质合金：hard material 硬质材料 | hard metal 硬质合金 | hard mud 硬泥
2. 硬合金：hard heading work 石硐掘进工作 | hard metal 硬合金 | hard metal bit 硬质合金钎杆
3. 硬金属(黏结碳化物另一名称)：Hard magnetic material 硬磁材料 | Hard metal 硬金属(黏结碳化物另一名称) | hard soldening 硬焊
4. 硬性金属,硬质合金：硬印embossing stamp | 硬性金属,硬质合金hard metal | 硬橡胶辊ebonite roller
1. The alignment of a dozen or more hard discs eventually takes a metal, sculptural form.
2. Power disruptions in provinces hit hard by recent snowstorms forced many zinc and other metal manufacturers to suspend part or all of their production.
3. The Chinese metal giant has worked hard to diversify its business in recent years.
4. The evacuees were given free bottled water and sandwiches, and many gasped when a hard rain rattled the metal roof of the building.