But stainless steel tube outer wall and the outer wall of the copper pipe which pipe bead setting more is still unclear, but can say two pipe wall mostly film condensation.

但不锈钢管外壁和铜管外壁哪种管材的珠状凝结更多尚不清楚，但可以说两种管材外壁大部份是膜状凝结。

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Wooden bead, occasionally ceramic, copper or other materials, it also cured lacquer engraving directly without tires.

胎为木制，偶尔也用陶瓷、铜或其它材料，也有用固化的漆直接刻制而不用胎。

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Looks bright, no rust, bead-like (cut pill, cylindrical-shaped), widely used in copper, aluminum, zinc, stainless steel workpiece surface treatment.

外观光亮、无锈，圆珠状(切丸，圆柱状)，广泛应用于铜、铝、锌、不锈钢等工件的表面处理。

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The colour of the cross's pillar is achieved by the oxidisation of the copper, impregnated in resin and then bead-blasted to bring the copper to the surface.

BBC: Saltash Celtic cross marks Cornwall boundary