防护

• The presence of boron or a boron compound in neutron shields has certain advantages .
  在中子防护体中加入硼或一种硼的化合物是有一定优点的。
• It's unlikely that a space traveler would stray outside the craf without protective gear .
  漫游太空的人不穿戴防护衣帽是不能走出宇宙飞船的。
• The strength of a safety screen is greatly increased by brazing each wire crossing .
  在金属丝的每一个交叉处进行铜焊，可大大增加防护网的强度。
• In general, the stricter the physical containment, the less strict is the biological containment .
  总之物理防护措施越严，生物防护措施则可稍松。
• For this reason the atomic engine must be carefully shielded with thick walls of concrete .
  为此，原子能发动机必须用厚厚的水泥墙仔细地防护起来。
• This situation should be borne in mind in connection with the problem of thermal radiation shielding .
  在谈到热辐射的防护问题时应当注意这种情况。
• Ralph stood up, feeling curiously defenceless with the darkness pressing in .
  拉尔夫站了起来，随着暮色逐渐深沉，他产生了一种奇怪的失去防护的感觉。
• A transparent cover is provided to protect the disc against accidental marking or smudging .
  圆盘外有透明的防护罩，以免偶然在圆盘上弄上污点或线迹。
• Heavy metals, such as iron and lead, make good gamma-ray shields because of their high density .
  重金属像铁、铅等由于密度很大，都是防护射线的最好的防护材料。
• The striking of any hard surface with their swords or spears required the bearer to straighten the weapon .
  要想用剑和矛去进击一个坚强的防护面，使用者需要去修整他们的武器。