herbicide是什么意思

用法例句

The results found that: apply herbicide+oversowing, 24h grazing+oversowing can increase pasture density and production and improve pasture competition, compare with cultivation, the cost was reduced by 54.

结果表明 :化学除杂、全日制放牧免耕补播与常规法 (耕作重播 )均能改善人工种植牧草生长环境 ,杂草、蛴螬数量明显降低 ;两种免耕补播比常规法重播成本分别降低54。

Mathematic model applying problem in chemistry;

数学方法在化学中的应用

Report of developments of tobacco chemistry in 2006;

2006年烟草化学学科研究发展报告

Student self-concept and conceptual understanding in learning chemistry;

学生自我概念和化学教学中概念理解的研究

Study about Evaluation Method of Lessons in Higher Chemical Education;

高师化学专业学生说课评价的研究

Thermally and chemically composite activation of coal gangue used in cement as mineral admixture;

煤矸石的热力-化学复合活化研究

The Present Situation of Agricultural University's Chemical Experiments and Reformatory Thinking;

农业院校化学实验教学现状及改革思路

Calculation of chemical exergier of paraffin and olefin by using group connectivity index;

用基团连接性指数计算烷烃和烯烃的化学

Meanwhile,we have revised the original textbook "The Chemistry of Fine Chemicals" on the basis of reformation to meet the needs of the society.

同时根据硕士点的研究方向与内容,在科研的基础上对原有的《精细化学品化学》教材进行修订。