shield

• These elements alone, however, are not quite as satisfactory for neutron shielding .
  然而，单用这些物质来防护中子不见得十分令人满意。
• The problems of shielding from thermal and nuclear radiations are thus quite distinct .
  因此防御热辐射与防御核辐射的问题是完全不同的。
• 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。
• 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。
• Turnus threw his lance, but it recoiled harmless from the shield of aeneas .
  图努斯投了一枪，但标枪从埃涅阿斯的盾牌上弹了回来，没有造成任何伤害。
• 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。
• Airplanes drag along a very thin shield of motionless air known as a boundary layer .
  飞机拽着一层很薄的紧贴机面不动的空气一道向前运动，这层空气叫做附面层。
• The front wall is still subjected to wind pressure, although the back wall is shielded from it .
  正面墙仍然受到风压作用，尽管后墙因受到掩蔽不会受到它的作用。
• 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。
• There is no exchange-rate policy that can shield malaysia from income losses when this happens .
  当这种情况发生时，没有任何汇率政策能保护马来西亚的收入不受损失。