Introducing the development background and structure characteristics of small freon cold storage training desk, illustrating some important training items on the training desk.
介绍了小型氟利昂冷库实训台的研制背景及结构特点，列举了通过该实训台可开设的实训项目。
The cost of completely immunizing a child is approximately $US15. This includes buying the vaccines, training vaccinators, cold storage and transport to make sure vaccines arrive safely.
通常来讲，一位儿童接受免疫仅需15美金，这包括：购买疫苗、培训疫苗接种员和志愿者、疫苗冷藏、疫苗传送并安全到达目的地。
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