游动联系人：铍铜合金，镀镍板。

MOVABLE CONTACT: Beryllium copper alloy, gold over nickel plate.

youdao

游动联系人：铜合金，镀金镍板。

MOVABLE CONTACT: Copper alloy, gold plate over nickel plate.

youdao

游动联系人：铜合金，镀银。

MOVABLE CONTACT: Copper alloy, silver plated.

youdao

游动联系人：锡青铜，镀银。

MOVABLE CONTACT: Tin bronze, silver plated.

youdao

游动联系人：锡青铜，镀银。

MOVABLE CONTACT: Tin bronze, silver plated.

youdao