metals.的例句（metals.在句子中的用法）

• These metals may be purified by a technique called zone refining. 这些金属可以用所谓“逐区提纯法”来提纯.
• Gold and silver are tractable metals. 金和银是容易加工的金属.
• Medieval alchemists attempted to transmute base metals into gold. 中世纪的炼丹术士企图把贱金属炼成金.
• A number of metals and alloys, how ever , are difficult to silver - solder and require special procedures. 但是有许多金属和合金是难于银焊的,因此需要采用专门的工艺方法.
• Lead was one of the metals known to the ancient world. 铅是早在古代就已知的金属之一。
• Lysosome and cellular plasmid are activated to restrain activity of heavy metals. 溶酶体和细胞质粒抑制重金属活性.
• The free alkali metals react immediately with water to liberate hydrogen. 游离的碱金属直接和水中作用,放出氢气.
• Marketing of processing machines for lathing, planning, milling, grinding and drilling metals. 经销车, 刨, 铣, 磨,钻等金属切加工设备.
• Metals which were mutually soluble would tend to give strong junctions. 可互溶的金属趋向于产生牢固的结合点.
• Ma inly used for sanding the products such as black metals, nonmetals materials, wood and - made board. 黑色金属 、 硬质非金属 、 木材、人造板等.
• The alchemists were unable to accept the inconvertible nature of elemental metals. 炼金术士无法接受金属元素的属性不能改变这一事实.
• Hexavalent chromium is used to plate metals and to make paints, dyes, plastics and inks. 六价铬常作为金属板用于制造涂料 、 燃料 、 塑料和墨水.
• Francium is the densest of the Alkali Metals and also radioactive. 钫是碱金属中密度最大的,具有放射性.
• Ferrous metals , timber, and pulp seem to offer the main field of reduction. 看来,黑色金属 、 木材和纸浆是削减的重要对象.
• Metals expand when they are heated. 金属受热会膨胀。
• However, embrittlement occurs in some metals at elevated temperatures and pressures. 但是, 当温度和压力升高时,某些金属会脆化.
• Most natural electrum also contains copper, iron, palladium, bismuth, and perhaps other metals. 大部分天然银金矿含有铜 、 铁 、 钯 、 铋, 可能还有其它金属.
• Metals suitable for electroless metal plating on fabrics are copper and nickel. 适于织物化学镀的金属是铜和锋,孰优?
• Yttrium serves as an ideal non - magnetic diluent for the rare - earth metals. 钇被用作稀土金属一种理想的 非磁性 稀释剂.
• Tungsten has the highest dian of all metals: 3400 centigrade. 钨在所有金属中具有最高的熔点,达到了3400摄氏度.