基于各种努力，与2000年相比，北京市空气中的硫化物含量减少了近一半，工业烟尘排放量则减少了三份之二。
Because of that and other changes, Beijing’s sulfur emissions have been cut almost in half compared with 2000, and industrial dust has decreased by two-thirds.
研究了NR/BR为70/30（质量比）时普通、半有效和有效3种硫化体系共混物的拉伸疲劳寿命和力学性能。
The fatigue failure and mechanical properties of conventional, semi-efficient and efficient curing systems of NR/BR(70/30) blend were studied.
用途：本产品广泛应用于净化半水煤气、原料气天然气、油田气、煤气、及二氧化碳气体中的H2S及部分有机硫化物。
This product is widely used in semi-water gas purification, raw gas, natural gas, oil gas and the H2S of carbon dioxide gases and some organic sulfides.
结果表明，采用普通硫化体系、半有效硫化体系的效果明显优于有效硫化体系及无硫黄硫化体系。
The results showed that the effectiveness of conventional curing system or semi efficient curing system was much higher than that of efficient curing system or non sulfur curing system.
应用地表标志带和隐伏花岗岩进行隐伏、半隐伏石英脉型黑钨矿床预测和评价，必须研究其地质地球化学类型，只有属于钨锡硫化物型的标志带，才具有找矿评价意义。
The use of the surface indication zone and hidden granite body to the prospecting forecast and evaluate the hidden and semi-hidden quartz-vein type wolframite deposit is studied.
本发明公开了一种制备硫化钠的半立式反射炉以及工艺。
The invention discloses a semi-vertical reverberatory furnace for preparing sodium sulfide and a technique thereof.
用途：本产品广泛应用于净化半水煤气、原料气天然气、油田气、煤气、及二氧化碳气体中的H2S及部分有机硫化物。
Uses: This product is widely used in semi-water gas purification, raw gas, natural gas, oil gas and the H2S of carbon dioxide gases and some organic sulfides.
用途：本产品广泛应用于净化半水煤气、原料气天然气、油田气、煤气、及二氧化碳气体中的H2S及部分有机硫化物。
Uses: This product is widely used in semi-water gas purification, raw gas, natural gas, oil gas and the H2S of carbon dioxide gases and some organic sulfides.
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