乙炔

acetylene series

炔属烃

acetylene generator 乙炔发生器 | acetylene series 炔属烃 | acetylene 乙炔

acetylene

炔

乙炔(acetylene)是最简单的炔烃,又称电石气. 分子式HC≡CH,化学式C?H?,无色有芳香气味的易燃气体. 乙炔分子量26.4,气体比重0.91(Kg/m3),热值12800(千卡/m3)在氧气中燃烧速度7.5 ,纯乙炔在空气中燃烧2100度左右,在氧气中燃烧可达3100℃,

imide

酰亚胺

以苯乙炔与甲基二氯硅烷、甲基三氯硅烷在有机锂试剂中反应,合成了甲基二苯乙炔基硅烷(MDPES)和甲基三苯乙炔基硅烷(MTPES)2种新型耐高温有机硅树脂.TGA和500 ℃烧蚀测试经酰亚胺(Imide)改性的二者共聚物的复合材料表明:其耐热保持性优异,

acetylene welding equipment

氧气乙炔焊

打磨机 grinding machine | 氧气乙炔焊 acetylene welding equipment | 电焊机 electric welding machine

gas welding

气焊;乙炔气焊

gas-water transition zone 气-水过渡带 | gas-welding 气焊;乙炔气焊 | gas-well back-pressure curve 气井回压曲线

oxyacetylene gas cutting

氧乙炔气割

布置图 arrangement diagram | 氧乙炔气割 oxyacetylene gas cutting | 低合金钢管 low alloy steel

oxyacetylene gas cutting

氧乙炔气割packing 包装

oxide film 氧化膜 | oxyacetylene gas cutting 氧乙炔气割packing 包装 | Pair production 电子偶生成 电子对产生

oxyacetylene welding outfit

氧乙炔气焊机

oxyacetylene welding氧炔焊 | oxyacetylene welding outfit氧乙炔气焊机 | oxygen welding氧焊; 氧气焊接

manualblowpipes for oxyacetylene welding

手动氧乙炔焊接机

b4601 手动气体切割机 manual gas cutting torch... | b4602 手动氧乙炔焊接机 manualblowpipes for oxyacetylene welding | b4603 熔接、切割机用压力调节器 pressure regulators for welding, cutting and allied pr...

oxygen-acetylene cutting

氧乙炔切割,气割下料

oxygen welding ==> 氧焊,氧气焊接 | oxygen-acetylene cutting ==> 氧乙炔切割,气割下料 | oxygen-bearing ==> 含氧的

tram stop：(有轨)电车车站

post 邮局 | tram-stop(有轨)电车车站 | zebra-crossing 斑马线

Jaish-e-Mohammad,JEM：穆罕默德军

16. 乌兹别克斯坦伊斯兰运动Islamic Movement of Uzbekistan,IMU | 17. 穆罕默德军Jaish-e-Mohammad,JEM | 18. 伊斯兰祈祷团Jemaah Islamiya Organization,JI