Seamless pipe production process, there are two: Cross - rolling method ( Meng Mannesmann France ) and the extrusion method. 无缝管的生产工艺有两种: 斜轧法 ( 孟内斯曼法 ) 和挤压法.
雕刻刀: 雕刻铜版用的槽形钢刀.Graver: V - shaped steel cutting tool used by engravers . Also called burin.凹版印刷包括照相凹版,模型压印, 铜版凹印和移印.It includes gravure, die stamping copper - plate engraving and pad printing.这些铜版本身也还来不败为很宝贵的艺术品.These a...
Reports of the plot of this unusual film tend to excite revulsion.有关这部不同寻常电影的情节的报道常常令人生厌。He tried to conceal his instinctive revulsion at the idea.他试图饰盖自己对这一想法本能的厌恶.My feeling toward my new friend underwent a revulsion w...
Please expert advice: Canton where books acridine Publications shop?请高人指点: 广州哪里有旧书刊物店吖?Results: Detection rate of acridine orange staining fluorescence in gastric carcinoma was 46 %.结果: 吖啶橙荧光染色检测胃癌的检出率为46%.What are the h...