Red copper, atmosphere and sea water corrosion and excellent electric conductivity. Welding of red copper such as electrical copper row.

紫铜，耐大气，海水腐蚀，导电性好。紫铜焊接用，如导电铜排。

youdao

SMOOTH V series cut off copper, aluminium row fracture with no deformation.

字系列，切断铜铝排断口平整，不变形。

youdao

Using spinach leaves as row material, chlorophyll was extracted with 95%ethyl alcohol and sodium copper chlorophyllin was made by chemistry.

以菠菜叶为原料，95%乙醇为溶剂提取叶绿素，通过化学法制得叶绿素铜钠盐。

youdao

Managed-money accounts returned as big net-buyers in copper for the second week in a row, having increased their net-longs to 27, 030 contracts.

FORBES: FOCUS: Speculators Take Big Long Positions In Gold - CFTC

In copper, managed-money accounts increased their net long for the sixth week in a row by adding gross longs and cutting gross shorts.

FORBES: FOCUS: Speculators Add To Bullish Gold, PGM Positions For Seventh Straight Week -- CFTC Data

In copper, managed-money accounts stayed net-short for a second week in a row, but reduced the size of their position by adding gross longs and cutting shorts.

FORBES: Speculators Add To Gold, Silver, Palladium Bullish Positions --CFTC Data