上横杆 meaning in English

cross tube

Total length flexes from 78cm to 130cm , the t shape pole is fixed with two extrusive slots respectively . the middle umbrella gear is connected with the pole . turn the mop pole to move the rail beside gear through the umbrella gear function
：总长度可由78公分伸缩拉长到130公分， “ t ”形拖把杆上横杆两端分别有2个突出的卡槽中间一组伞形轮与拖把杆本体连接固定，转动拖把杆通过伞形轮的作用“ t ”形拖把杆上轮两端的横杆即跟着传动。