trivalent [traɪ'veɪlənt]

例句:

• Chromium is widely distributed in nature, organisms mainly trivalent form of chromium.
  铬在自然界中广泛分布, 生物体中主要以三价铬的形式存在.
  
• The development history of trivalent chromium passivation for zinc plating was overviewed.
  概述了镀锌三价铬钝化的发展历程.
  
• The major advantages and disadvantages of trivalent chromium electroplating were introduced.
  介绍了三价铬镀铬的主要优点与缺点.
  
• The traditional polio vaccine is sometimes called the trivalent vaccine.
  来自VOA