镍

• The following elements are nickel, chromium, molybdenum .
  这些元素是：镍、铬、钼。
• The earth's core, at least the outer one is believed to consist of nickel and iron .
  一般认为地核至少是外核由镍和铁构成。
• Commercially two main types of hydrogenations are carried out with nickel catalyst .
  商业上采用的以镍作催化剂的氢化有两种。
• This is essentially a development of thoria dispersion strengthened nickel alloys .
  这本质上是用氧化钍弥散强度化的镍基合金。
• the spacing between atomic planes in a nickel crystal is 2. 15×m.
  一块镍晶体中各原子平面的间距为215米。
• Near the border zone an important string of nickeliferous peridotites is emplaced .
  在靠近交界上有重要的一连串的含镍橄揽岩体的侵入。
• Near the border zone an important string of nickeliferous peridotites is emplaced .
  在靠近交界带上有重要的一连串的含镍橄榄岩（体）的侵入。
• A bottom layer of nickel catalyst was provided to promote the endothermic reaction of steam and methane .
  底层镍催化剂促进蒸汽和甲烷的吸热反应。
• Many sulphides, selenides, and tellurides have the nickel arsenide's nias type of structure .
  许多硫化物，硒化物和碲化物具有砷化镍NiAs型的结构。
• Iron, nickel, copper, silver, gold, iridium, or ruthenium may be included as cocatalyst metals .
  铁、镍、铜、银、金、铱或钌，可用作复合催化剂金属。