求翻译：取水杨醛5.2 mL(50 mmol)、 50 mL 90％醋酸，5 mL聚乙二醇-400，依顺序加入100 mL圆底烧瓶中，再将27.4 g(50 mmol)硝酸铈铵溶于30 mL水中，加入烧瓶中，水浴加热，维持温度在45-50 ℃，展开剂TLC跟踪，反应约1.5小时。将反应后的混合溶液倒入盛有100 g冰和100 mL水的400 mL烧杯中，静置一天。即析出3-硝基水杨醛和5-硝基水杨醛混合物。是什么意思？

Water Salicylaldehyde 5.2 mL (50 mmol), 50 mL 90% acetic acid, 5 mL polyethylene glycol -400, according to the order by adding 100 mL round bottom flask, then 27.4 g (50 mmol) dissolved in 30 mL cerium ammonium nitrate water, adding flask, heated in water bath to maintain temperature at 45-50 ℃, the

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Takes salicylic aldehyde 5.2 mL (50 mmol), 50 mL 90% acetic acid, 5 mL polyethylene glycol - 400, join in 100 mL round flasks according to the order, again (50 mmol) the ceric dissolves 27.4 g in 30 mL water, joins in the flask, heating in water bath, maintenance temperature in 45-50 ℃, developing s

Preparation of salicylaldehyde 5.2 mL (50 mmol), 50 mL 90% acetic acid, 5 mL polyethylene glycol 400, in order to join in a 100 mL round-bottomed flask, then 27.4 g (50 mmol) ammonium ceric nitrate dissolved in 30 mL of water, joining the flask in the water bath heating, maintenance temperature 45-5

Salicylidene 5.2 mL intake (50 mmol), 90% 50 mL acetic acid 5 mL polyethylene glycol-400, consecutively joined in 100 mL round bottom flasks, and 27.4 g (50 mmol) ammonium ceric nitrate dissolved in 30 mL water, added to flask in water bath heating to maintain temperature 45-50 ℃, developing agent T