1·The International Coordinating Group (ICG) on vaccine Provision for Epidemic Meningitis Control has provided 178,000 doses of trivalent vaccine for a mass vaccination campaign.
为控制流行性脑膜炎提供疫苗国际协调小组已为大规模预防接种运动提供178,000份三价疫苗。
2·The resulting "trivalent" vaccine provokes the patient's immune system into producing antibodies, and that primes it for an attack by the worrying strains of flu.
所产生的“三价疫苗”刺激患者的免疫系统产生抗体，为流感病毒株的可能袭击做好准备。
3·One means of accomplishing this end is to add trivalent cations to the water.
实现这一目的的一种方法是将三价阳离子加入水中。
4·Trivalent chromium plating can be divided into chloride and sulfate systems.
三价铬电镀分为氯化物体系和硫酸盐体系。
5·Trivalent chromium electroplating not only can reduce pollution obviously and save pollution treatment cost, but also can improve the quality of electroplating products.
三价铬电镀不仅可明显减少电镀对环境的污染，节省大量的污染治理费用，而且还可提高电镀产品的质量。