1 alloy steels are formed by the addition of one or more of the following elements: nickel, tungsten, silicon, and small amounts of other alloying elements.
加进下列一种或几种元素可制成各种合金钢：镍、钨、硅和少量别的合金元素。
Watch strap can be divided into many types, the most common metal watchband is, in addition to using precious metals, tungsten steel, titanium and other metal.
手表的表带可以分为很多种，最为常见的就是金属表带，除此之外还有：用贵金属、钨钢、钛金属等。
In addition, the difference between traditional and multi-structural cemented tungsten carbide is investigated, and so are the mechanisms of abrasion resistance and fracture toughness of the latter.
另外研究了传统硬质合金与多级结构硬质合金的区别及多级结构复合材料的耐磨机理和韧性机理。
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