进入21世纪，由于环境保护的要求，锡铅焊料将逐步被无铅焊料所取代。
Due to the consideration of environmental protection, the substitution of lead-containing solder with lead-free solder has become an inevitable trend in the 21st century.
对多种锡铅焊料进行一系列不同条件下的漫流性试验 ，分析它们在铜表面上的铺展状况 ，最后归纳出焊料成分、钎焊温度、助焊剂对软钎焊料漫流性影响的规律。
The results show that the melting properties of the solder alloy are satisfactory, and the soldering temperature and time have much effect on the shearing-strength of the joints.
方法准确、可靠、简便、快速，完全适用于银锡焊料中微量铅的检验。
The method is proved to be accurate, reliable, convenient and quick, absolutely suitable for the assaying of trace lead in silver tin solder.
在电子电器领域，产品制造过程零配件之间连接导通工艺中的铅锡焊料所引起的环境污染越来越引起人们的重视。
In the electrical and electronic fields, Pb-Sn solder which is used to connect parts in the product manufacturing process can cause environmental pollution, which has drawn increasing attention.
仪表适用于测量氨的液体和气体的压力真空，也可测量对碳钢、奥氏体不锈钢和锡铅类焊料无腐蚀作用的介质的压力和真空。
It is used for pressure and vacuum of ammoniac liquid and gas as well as of zhe madia which can't corrode carbon steel, stainless steel and solders like tin and lead.
文章通过试验证明：纯锡焊料凸块和含钴底部凸块金属焊层结合可延长无铅焊接倒装片的寿命。
In the article experiment prove:combination with feine tin-solder-bumps and underbump-metalliza with cobalt be able to longthen life of leadless flip-chip-solderng.
该装置(1)可使溶出于包含以锡作为主成分的无铅焊料中的铜作为金属间化合物析出以分离铜。
The apparatus (1) enables copper which has dissolved in a lead-free solder comprising tin as the main ingredient to precipitate as an intermetallic compound to separate the copper.
纯锡焊料凸块和含钴底部凸块金属焊层结合可延长无铅焊接倒装片的寿命。
The cost of wire bonding chips and solder bumped flip chips on boards or on organic substrates is stated.
氮气循环使用，增加无铅焊料的侵润性和流动性，使锡点饱满光亮。
Circulated nitrogen system is designed to improve the wettability and fluidness of lead-free solder and to ensure that the solder joints are shiny and bright.
氮气循环使用，增加无铅焊料的侵润性和流动性，使锡点饱满光亮。
Circulated nitrogen system is designed to improve the wettability and fluidness of lead-free solder and to ensure that the solder joints are shiny and bright.
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