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Method for preparing 2,5-dimethoxy-4-chloroaniline by hydrogenation reduction
The invention provides a method for preparing 2,5-dimethoxy-4-chloroaniline by hydrogenation reduction, which comprises the following steps: (1) beating and dissolving a raw material ofExpand
Upper pile head drainage wire fixing rod
The utility model discloses an upper pile head drainage wire fixing rod which comprises a supporting rod and an auxiliary supporting rod. The supporting rod comprises an upper section and a lowerExpand
Multi-energy source straight shaft hybrid power engine
TLDR
The invention relates to a multi-energy source direct-axis hybrid power engine, pertaining to the engine technical field. Expand
Chinese medicinal tea for reducing sugar and eliminating thirst and prodn. method
A health-care tea for treating different kinds of diabetes by reducing blood sugar and promoting secretion of body fluid is prepared from more than 20 Chinese-medicinal materials such as gypsum,Expand
Detection apparatus of work condition of screw pump
The invention discloses a detection apparatus of a work condition of a screw pump, and relates to a test apparatus for dynamically detecting polished rod torque, a load and a rotating speed of aExpand
Oilfield reinjection water treatment device
The invention discloses an oilfield reinjection water treatment device which comprises an electrolyte reactor, wherein two liquid inlets are formed in the side wall of one side of the electrolyteExpand
一种2,5-二甲氧基-4-氯硝基苯加氢催化剂的制备方法
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