工字型截面连接杆件是由碳制成。
I-shaped cross section connecting rods are made of carbon steel.
建议使用钢质钩环或者非工字型钩环。
Using steel carabiners and non - "I-beam" -shaped carabiners is also a good idea.
由底盘、带有工字型凸筋轨迹槽和对称的圆形凸筋轨迹槽以及一对按摩球构成的脚部滚踏按摩器。
The feet can make any massaging movement in any form along any direction on the foot pedal rolling massaging device. The user can also simultaneously use the balls to massage matching with palms.
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