Each steel cable is covered by a thin polymer tube (wrapped in stainless steel foil) to prevent rusting.
每根钢索均由覆有薄聚合物管（预先包在不锈钢箔内）以防生锈。
2
Tube Shave is a next-generation shaving technology that delivers fast, one stroke efficiency for significantly better hair catching than foil shaving.
管剃须是下一代剃须技术，提供快速，一个明显优于铝箔头发剃追上中风的效率。
3
The performance experiments on separate heat exchanges and integrated air conditioners before and after optimizing the inner grooved copper tube and reducing the thickness of aluminum foil are made.