由硫化钠和对二氯苯制成的一系列聚合物。
A range of polymers which are made from sodium sulfide and p-dichlorobenzene.
以1，4-二氯丁烷和硫化钠为原料，碘为催化剂，乙醇为溶剂合成了四氢噻吩。
Tetrahydrothiophene was synthesized using iodine as a catalyst from 1,4-dichlorobutane and sodium sulfide.
甲醛与间苯二胺、硫化钠和硫的反应产物；
Formaldehyde, reaction products with m-phenylenediamine, sodium sulfide and sulfur;
研究了无催化剂存在时，溶剂、硫化钠用量、反应时间和反应温度对从氯化苄和硫化钠合成二苄基硫醚的影响。
Effects of solvent, sodium sulfide dosage, reaction time and reaction temperature in syn thesis of dibenzyl sulfide from benzyl chloride with sodium sulfide without catalyst were studied.
分析了我国西北地区二氧化硫烟气处理现状，提出一种适合该地区的烟气脱硫技术——硫化钠一元素硫法。
The present situation of metallurgical off-gas treatment in Northwest China is analyzed and sodium sulphide-elemental sulphur desulphurization technology suitable to the area is proposed.
分析了我国西北地区二氧化硫烟气处理现状，提出一种适合该地区的烟气脱硫技术——硫化钠一元素硫法。
The present situation of metallurgical off-gas treatment in Northwest China is analyzed and sodium sulphide-elemental sulphur desulphurization technology suitable to the area is proposed.
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