無鉍鉛 的英文怎麼說
中文拼音 [wúqiān]
無鉍鉛
英文
bismuth free lead-
Pb - free solders ? sn - bi - zn based with our own patent and their modification to fit for package applications
無鉛焊錫?錫鉍鋅系無鉛焊錫,材料設計、開發,焊料(錫球、錫膏)開發等。In this paper, development of these three kinds of free cutting steels for machine structure purpose is described
概述了錫易切削鋼、鉍易切削鋼、石墨易切削鋼這3類機械結構用無鉛易切削鋼的發展情況。
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