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1)  MH110 double-screw rod air compressor
MH110双螺杆空气压缩机
1.
Application of MH110 double-screw rod air compressor in gas turbine power plant
MH110双螺杆空气压缩机在燃机电厂的应用
2)  double screw bar and two stage air compressor
双螺杆二级空气压缩机
3)  double-screw compressor
双螺杆空气压缩机
4)  screw air compressor
螺杆空气压缩机
1.
Through the performance test of screw air compressor by changing work conditions, analyzing the test results, investigating other air compressor basic parameters, several suggestion and reference about the Auxiliary equipment s design and choice of screw air compressor are presented.
分析了 3 5m3 /min螺杆空气压缩机的变工况性能试验结果。
5)  explosion screw air compressor
螺杆式移动空气压缩机
1.
Through analysing the struction and theory of explosion screw air compressor for coal mine,analysing the safety and economic of the system in usage in front and back,points out the importance that system in the modern well to produce and fix.
通过对煤矿用螺杆式移动空气压缩机结构、性能、工作原理的研究分析、技术改造和设备投入使用前后的经济性比较,指出了该设备在现代化矿井生产应用中的重要性。
6)  Screw air compressor
螺杆式空气压缩机
1.
Application of screw air compressor oil on electric locomotives;
铁路机车螺杆式空气压缩机油的应用
2.
Screw air compressor oil is developed to meet the requirement that the new type railway passenger locomotive be equipped with screw air compressor.
为适应铁路新型客运机车装用螺杆式空气压缩机的需要,研制螺杆式空气压缩机油。
3.
Aptitude controller of screw air compressor jointly developed by the author and certain air compressor factory are studied.
介绍了笔者与某空气压缩机厂联合研制的螺杆式空气压缩机智能控制器。
补充资料:MH
分子式:C4H4N2O2
分子量:112.09
CAS号:123-33-1

性质:白色结晶。260℃分解,熔点>300℃。25℃时在水中溶解度约为0.6%,在乙醇中溶解度为0.1%,在二甲基甲酰胺中为2.4%。其钠、钾和铵盐及有机磷盐类易溶于水。

制备方法:由顺丁烯二酸酐与水合肼反应而得。在反应锅中投入水及40%水合肼,搅拌冷却下滴加30%盐酸,温度控制在20℃以下,至pH值为6.2-6.4,投入顺丁烯二酸酐,缓缓升温至106-110℃,回流2h,降温至5℃,甩滤,滤饼用冰水洗至pH4.8-5.1,干燥,得顺丁烯二酰肼,收率97%。

用途:顺丁烯二酰肼为选择性除草剂和暂时性植物生长抑制剂。药剂可通过叶面角质层进入植株,降低光合作用、渗透压和蒸发作用,能强烈地抑制芽的生长。用于防止土豆、洋葱、大蒜和萝卜贮藏期发芽,并有抑制作物生和延长开花的作用,也可用于非耕地除草。该品的互变异构为3,6-二羟基哒嗪(3,6-Dihydroxypyridazine)。是磺胺类药物磺胺甲氧嗪的中间体。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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