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I 灯头式(外形如图1)辅磁形如图2。 (1)辅磁;(2)辅磁挂(金属制)辅磁套管如图3。
I lamp type (shape shown in Figure 1) auxiliary magnetic shape in Figure 2. (1) auxiliary magnetic; (2) auxiliary magnetic hanging (metal) auxiliary magnetic tube shown in Figure 3.