以下为句子列表：
英文: 50 kg/ha of urea + 50 kg/ha of KCl 50-60 days after planting. There is no need of herbicides.
中文: 播后50~60天追施50公斤/公顷尿素和50公斤/公顷氯化钾。没必要用除草剂。
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英文: A description is given of the analytical method for the determination of the urea content in slow-release urea by the p-dimethyl aminobenzaldehyde spectrophotometry.
中文: 摘要介绍用对二甲氨基苯节醛分光光度法测定缓释尿素中尿素含量的分析方法。
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英文: -(-Bromophenyl)- -(H-,,-triazol- -yl)urea was synthesized by reaction of -bromophehy isocyan- ate and -amino-H-,,-triazole. In this reaction, a new method of Curtius rearrangement was used to synthe- size -bromophehyl isocyanate.
中文: 以-溴苯甲酸为原料,经过Curtius重排反应制得-溴苯异氰酸酯,再进一步与 -氨基-H-,,-三氮唑发生亲核加成反应,合成了目标产物-(-溴苯基)- -(H-,,-三氮唑- -基)脲。
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英文: A new variety indigenous to Sichuan province, Cimicifuga foetida L. var. purpurea C.
中文: 本文报道四川产升麻一新变种紫花升麻Cimicifuga foetida L.var. purpurea C.
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英文: (5) It was no significant difference of the serum protein and serum urea nitrogen of the 21-day broilers (p>0.05).
中文: (5)日粮中添加豆粕生物肽，对21日龄肉仔鸡血清蛋白无显著影响(P＞0.05)，血清尿素氮各试验组与对照组差异不显著(P＞0.05)。
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