由于美元兑其他货币走软，像黄金、白银、石油接及铜等大宗商品因而获益。
Commodities such as gold, silver, oil and copper are benefiting because the dollar is weaker against other currencies.
提出接轴平衡力应该采用欠平衡，平衡系数取0.89，这样既可以降低接轴承受的弯矩，又可以降低接轴虎口铜滑块的载荷。
The lower balance force with balance factor 0.89 is adapted to reduce bending of universal coupling shaft and load of copper slider.
本文阐述的是，铜及其合金精密零件氢气保护扩散钎接焊工艺问题。
This paper describes hydrogen shield diffusion braze welding technology for precise parts of copper and compound metal.
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