哪位大神帮忙翻译一下这个摘要，谢谢

第一种：
As one of the major nitrogenous fertilizer, ammonium sulfate has been the world within the scope of widespread use of fertilizers, the main preparation through industrial by-product, such as the coking plant of saturator method, etc.This article through to the properties of the ammonium sulfate, industry development, review and comparison of main production method to design a simple, easy operation, less pollution of laboratory ammonium sulphate preparation research purposes, and the experimental results were analyzed.
Method, at present, the coking plant of ammonium sulphate production by sulfuric acid absorption in the coke oven gas ammonia in ammonia production of ammonium sulfate by gas contact with sulphuric acid mother liquor in different ways and points three types: direct method and indirect method and direct method.A direct method is one of the most widely, namely people usually say the saturator method.
Is adopted in the experiment of sulfuric acid and ammonia neutralization reaction preparation of ammonium sulfate.Reactor for three flask, through the ammonia absorbing imported into the reactor in the sulfuric acid to get ammonium sulfate crystallization.With the control variable method to explore the influence factors on crystallization.After crystallization will first appeared in the airway, will gradually appear in the reactor solution above the walls and continue into the ammonia, will be formed in solution crystallization and precipitation precipitation, if continue to stir, will form the turbid liquid.When let stand for one night and in solution crystallization did not dissolve or reduce, the suction filter step.Tong ammonia, should first make glass tube in solution, when there was a crystal glass tube, to make glass tube slightly above the liquid surface, in order to prevent the crystalline jam the glass tube.
Suction filter should be paid attention to when using filtrate will adhere to the reactor wall and the crystallization of airway mouth wash down, reduce the error.After drying, weighing, and compared with the calculation of ideal crop yield is calculated.Then the influence of different factors on the yield can be obtained.
Key words: ammonia;Sulfuric acid;Ammonium sulfate.Crystallization conditions;Chemical absorption;Control variable method

第二种：
Calculation of crystallization blockage of crystallization crystallization and crystal precipitation, if continue to stir, will form a turbid liquid. When standing for a night and solution did not dissolve or reduce, can by suction filtration steps. Through ammonia, should first make the glass tube into the solution, when the glass tube and the glass tube is slightly higher on the surface to prevent crystallization of the glass tube. When filtering should pay attention to using the filtrate attached to the reactor wall and gas guide nozzle wash down and reduce error. After drying, weighing, and ideal yield calculated yield. In order to get different factors on the yield effect. Key words: ammonia; sulfate; ammonium sulfate; crystallization conditions; chemical absorption; control variable method
两种皆可，本人较为推荐第二种：答题不易，望采纳，谢谢