Welding is one of the important technologies in impellers " artifactitious . "焊接是 叶轮 加工的重要工艺之一.The welding conditions should always be neutral or slightly oxidizing.焊接气氛必须永远保持中性或微氧化.The welding is so smooth that you can ...
Multifold techniques and methods of anti - icing and deicing are summarized.总结了目前国内外提出的多种 防 冰除冰技术及方法.Concrete, salt ( deicing agent ) penetration, and irreversible loss of concrete tensile strength.混凝土, 盐 ( 除冰剂 ) 的渗透, 和不...
这本文选包含了十个作家的作品范例.This anthology comprises samples from the work of ten authors.杰姆斯决定把自己关起来写一本新的文选.James decided to lock himself away and write a new album.我把那本作文选揉皱了,揩黑了.I made the book crinkle and black with a mess....