| 单词 | 熔接 |
| 释义 | 〔flux〕A substance applied to a surface to be joined by welding, soldering, or brazing to facilitate the flowing of solder and prevent formation of oxides.焊剂：施于熔接或焊接以防止氧化、促进焊面结合的物质〔acetylene〕A colorless, highly flammable or explosive gas, C2H 2, used for metal welding and cutting and as an illuminant. 乙炔，电石气：一无色，极易燃烧或爆炸的气体，C2H 2，用于金属熔接和切割技术和光源 〔hydrogen〕A colorless, highly flammable gaseous element, the lightest of all gases and the most abundant element in the universe, used in the production of synthetic ammonia and methanol, in petroleum refining, in the hydrogenation of organic materials, as a reducing atmosphere, in oxyhydrogen torches, and in rocket fuels. Atomic number 1; atomic weight 1.00797; melting point -259.14°C; boiling point -252.8°C; density at 0°C 0.08987 gram per liter; valence 1. See table at element 氢：一种无色，易燃的气体物质，在所有气体中最轻，而宇宙中最多用来生产合成氨和甲醇，提炼石油，氢化有机物质作为收缩的气体，用在氧氢焰熔接器和火箭燃料中。原子序数为1；原子量为1.00797；熔点为-259.14°C；沸点-252.8°C；零度时的密度是0.08987克/公升；原子价为1 参见 element |
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