Where does Germany think offsetting shifts into greater external deficits might occur?在德国看来,这么大的外部赤字应该转移到哪里?Yet this simple arithmetic ignores an offsetting effect: diminishing marginal returns.然而,这种简单的算法忽略了一种抵消效应: 边际收益递...
碳精棒常用于电弧灯.The stick of carbon is often used in an electric arc lamp.内阳极有两种材质,分别为不溶性碳精棒和含磷铜棒.The inner anode includes insoluble carbon and phosphorous - copper bar....