用气相色谱及常规分析方法，研究了苹果酸脲对烟气中焦油含量及原烟品质的影响。
Effect of urea malic acid on the content of tar in smoke smog and the quality of raw tobacco leaf was studied by gas spectrum and common analysis methods.
化肥中氮和氯的含量是经常需检测的指标，但常规分析方法为两次称量，耗时长，条件控制严格。
The content of nitrogen and chlorine in fertilizer is usually measured, but routine analysis method needs weighing twice, consuming long time and strict condition.
采用饲料常规分析方法，对拉巴豆不同生长时期的产量进行测定，并对其不同生长时期的常规营养成分进行测定。
In the paper, feed conventional analysis method was used to determine the yield and common nutrition component of Dolichos lab lab at different growing stage.
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