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....
As Wren's epitaph famously declares, the cathedral itself is his monument.众所周知，雷恩的墓志铭中写道，大教堂本身就是他的纪念碑。By his international achievements he leaves a fitting monument to his beliefs.他在国际上的成就为其信念作出了最好的注解。The monument p...
The text introduce the characteristic, principium, configuration, type, use and application of type drum microfilter.文中介绍了新型瓦楞面微孔过滤机的特点 、 工作原理 、 结构 、 选型 、 使用场合和应用实例....
After his mother died, he abandoned himself to grief.他母亲死后，他悲伤不已。These abandoned children have now got a future...这些被抛弃的孩子现在有了希望。This hard , melancholy dell, abandoned by the summer light, made her feel her loneliness.这阴...