设置
快速交货
免运费
国际贸易术语
支付类型
市场产品
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Product List
In a single pole, double throw switch, the user has a choice of two settings when turning on the switch. It is an On-Off-On switch. An example of a single pole, double throw switch is a vacuum cleaner with a high or low setting to choose from.
PTM Published on: 2011-11-11
