The invention relates to a nonresinous solder paste made of a metal powder, especially soft solder, and a gel which leaves no residues on the metal surface when the metal powder is melted down.
根据本发明，不含树脂的焊膏由一种金属粉末，特别是软焊料和一种凝胶体制成，其中，根据本发明的凝胶体在重熔金属粉末的过 程中，不在金属表面上留下残留物。
Fire researchers all over the world have concerned the research field for fire characteristics and rules of furniture (especially soft furniture) for a long time.
很久以来，家具特别是软垫家具的火灾特性和火灾规律，一直是世界各国的消防科研人员重点关注的研究领域之一。
Fire researchers all over the world have concerned the research field for fire characteristics and rules of furniture (especially soft furniture) for a long time.
很久以来，家具特别是软垫家具的火灾特性和火灾规律，一直是世界各国的消防科研人员重点关注的研究领域之一。
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