例句與用法

1. Brazing is a metal joining technique that exhibits its full potential when joining materials that are difficult to weld conventionally , such as different materials , steel alloys , or parts with thin structures , complex shapes , etc
   可焊接其他焊接方法難以焊接的材料，異種材料和合金鋼，薄壁構造或者形狀復雜的部件加工，這種強有效的金屬焊接技術就是銅焊接。
2. It is a dozen metals in one ; now almost diamond - hard - - and again almost as soft as copper ; here brittle as glass ? there malleable1o as silver ; now welding quite readily - - again , very difficult to weld ; melting rather easily - - at other times difficult to diffuse ; usually very magnetic - - and : again almost non - magnetic ; an excellent conductor of heat and electricity - - and at times stubbornly resistant to both
   鐵將十多種金屬特性合而為一：時而幾乎堅硬如金剛石，時而又柔軟如銅；此處易碎如玻璃，彼處又可展延如銀；時而很容易焊接，時而又很難焊合；有時相當易熔，有時又極難擴散；通常情況下富有磁性，但有時又幾乎磁性全無；本是熱和電的優良導體，但有時卻頑強地抗拒二者。