Application of optical basicity to metallurgical slags was discussed.讨论了光学碱度在冶金渣中的应用.Electrode regulating is a key link in electroslag furnace for energy saving and metallurgical quality improving.电极调节是电渣重熔炉的重要环节,是节约电能、提...
They jogged in silence a while, faces lowered, out of step.他们低着头，一言不发地慢跑了一会儿，步伐也不一致。She submitted to this scrutiny in unsmiling silence, patiently waiting for his next move.让他这么看着,刘玉英也不笑,也不说话, 耐烦地等待那结果.They walked in bad...
They are excavating a tunnel through the hill.他们在挖一条穿山隧道.Those workers were employed in excavating the foundations of the building.那些工人忙于挖掘建筑物的基础.It's a plentiful treasure house of intelligence which is worth excava...