In algebra, the sign X usually denotes an unknown quantity.在代数里, 符号X常用来表示未知数.In figure 24 'D' denotes quantity demanded and 'S' denotes quantity supplied.在图 24 中，D 代表需求量而 S 代表供应量。A very high temperatu...
The ensuing row snarled up the work of the joint peace commission.随后的争吵把联合和平委员会的工作搅得一团糟。"Let go of me," he snarled.他气急败坏地喊道：“放开我。”The dogs snarled at the intruders.那些狗冲着闯入者狂吠不已。...
Electric Furnace with double deslagging or in the basic oxygen furnace.如双除渣电炉或基本氧炉.The deslagging of acid welding material is better than that of base welding material.酸性焊材脱渣性优于碱性焊材....