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.
结果表明，液体聚硫聚脲齐聚物的用量、齐聚物中聚脲含量对固化后的环氧树脂玻璃化温度、模量及形态有较大影响。
The results show that the level of polysulfide polyurea and the content of hard segment in polysulfide polyurea influence the morphology, T_g and modulus of cured epoxy resin.
讨论了聚硫橡胶与环氧树脂的配比和固化剂用量对涂层性能的影响。
The influence of the ratio of polysulfide rubber and epoxy resin, and amount of hardener on the properties of coating film are discussed.
捕收剂用量的加大，可使电化学浮选精煤的产率增加，降硫率减小。
The more collecting agent, the higher flotation concentration recovery of coal electrochemical flotation, the lower percentage of desulfurization.
选定了较好的催化剂，并考察了催化剂用量、原料配比、反应温度和反应时间对产物硫含量的影响。
Suitable catalyst was selected, the effect of catalyst mass, mole ratio of sulfur to FCC gasoline, reaction temperature and reaction time on the sulfur content of product were investigated.
选定了较好的催化剂，并考察了催化剂用量、原料配比、反应温度和反应时间对产物硫含量的影响。
Suitable catalyst was selected, the effect of catalyst mass, mole ratio of sulfur to FCC gasoline, reaction temperature and reaction time on the sulfur content of product were investigated.
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